【高校　数学Ⅱ】　複素数１４　解と係数４　（１７分）

Watch all the lessons from Try's talented instructors for free! Try IT video lessons for junior high and high school students are designed to be easy to understand! You can use them to prepare and review for school, as well as for regular tests and exam preparation. The lessons are taught by top instructors with plenty of teaching experience, who are known for their fun and easy-to-understand teaching methods. *This lesson is a video created during the old curriculum. *Please be careful when watching it to prepare for entrance exams or regular tests for the new curriculum. If you watch the video and think, "It's easy to understand!" or "I want to take a class like this!", Try's individual instruction may be right for you. For details on Try's individual instruction service, to request materials, or to contact us, please click here. https://bit.ly/4hjhKSE In addition, +‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥+ Try offers free video lessons, "Try IT," to support home learning. "Try IT" can be used free of charge even by non-members. Please use it to prepare for exams and improve your home study. Video Lessons Try IT Official Website here: https://bit.ly/4jLULBg +‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥+ In this video lesson, you can learn "High School Mathematics II Complex Numbers 14 Solutions and Coefficients 4" in about 17 minutes. The key to solving the problem is "When x^2 + bx + c = 0, the sum of the two solutions α + β = -b, and the product of the two solutions αβ = c." Please watch the video lesson in the following order: [Key Points] ⇒ [Example Problems] ⇒ [Practice] ⇒ [Summary]. If you have any questions about a unit other than this one, please click on the URL below. You can watch the video lessons for each unit together. ■If you have any questions about "Mathematics II," click here! ・Mathematics II Expansion, factorization and binomial theorem https://goo.gl/TkUpx6 ・Mathematics II Calculation and value finding of fractional expressions https://goo.gl/1WQ3Cn ・Mathematics II Division of polynomials and remainder theorem https://goo.gl/hNyyv3 ・Mathematics II Equation and identity proof problems https://goo.gl/lE00Lh ・Mathematics II Complex numbers https://goo.gl/u5Q9Bc ・Mathematics II Solution of quadratic equations of discrimination, relationship between solution and coefficient https://goo.gl/XLqXE8 ・Mathematics II: Higher-order equations https://goo.gl/CjeKXz ・Mathematics II: Points on a line, points on a plane https://goo.gl/PHjKlW ・Mathematics II: Lines, two parallel and perpendicular lines https://goo.gl/NNp5b2 ・Mathematics II: Circles and lines, relationship between two circles https://goo.gl/mD09m1 ・Mathematics II: Trajectories and areas https: //goo.gl/wZgkYf ・Mathematics II: Trigonometric ratios and trigonometric functions https://goo.gl/HTDn4p ・Mathematics II: Relationship between sinθ and cosθ https://goo.gl/DkpzIc ・Mathematics II: Equations of sinθ, cosθ, and tanθ and general angles https://goo.gl/3Z3Cjo ・Mathematics II: Graphs of trigonometric functions and addition theorems https://goo.gl/wdiA3h ・Mathematics II: Composition of trigonometric functions https: //goo.gl/rKgKNS ・Mathematics II: Exponential Functions https://goo.gl/b5csBE ・Mathematics II: Logarithmic Functions https://goo.gl/VUeIAO ・Mathematics II: Limits and Differential Functions https://goo.gl/iShz4L ・Mathematics II: Differential Calculus https://goo.gl/iqGbx0 ・Mathematics II: Integration Methods https://goo.gl/HhWVSg ■If you have any questions about "Mathematics B", click here! ・Mathematics B Arithmetic progression (general terms and sum) https://goo.gl/gtXAGw ・Mathematics B Geometric progression (general terms and sum) https://goo.gl/lS60F8 ・Mathematics B Application of arithmetic and geometric progressions https://goo.gl/YQm99S ・Mathematics B Sequence and Σ calculations https://goo.gl/LxRn4p ・Mathematics B Difference sequence https://goo.gl/k13tYA ・Mathematics B Sum of special sequences https://g oo.gl/DQfdcd ・Mathematics B Recurrence formulas and mathematical induction https://goo.gl/Uvs8rv ・Mathematics B Vector definition and components https://goo.gl/3OHnXF ・Mathematics B Vector inner product and perpendicular conditions https://goo.gl/wR64EL ・Mathematics B Equinox formula and vector equation of a line https://goo.gl/wa4GJ8 ・Mathematics B Space vectors https://goo.gl/7oLJos