9 Questões Resolvidas de Equação do 2º grau

Want to solve quadratic equations in seconds? In this video lesson, I'll teach you how to solve a quadratic equation in seconds using addition and product, how to solve a quadratic equation using Bhaskara's formula, how to solve complete and incomplete quadratic equations, and how to solve quadratic equation problems. All this in 9 questions, solved in detail and with several tips and tricks for quick solutions. Study with me and succeed in Math. ONLINE MATHEMATICS PLATFORM: https://thyagoaraujo.com/ Solved Quadratic Equation Questions 01) (IFAL-2019) Where x1 and x2 are the roots of the equation x² – 5x + 6 = 0, the result of the product x1 . x2 is: A) 2 B) 3 C) 4 D) 5 E) 6 02) (IFAL-2019) Determine the value of k in the equation x² + k x - 2018 = 0, so that its roots are equal in magnitude but with opposite signs. A) -2 B) -1 C) 0 D) 1 E) 2 03) (IFAL-2019) Find the value of p so that the equation x² + p x + 12 = 0 has as roots the values 3 and 4. A) - 12 B) - 7 C) 0 D) 7 E) 12 04) (IFAM-2013) A rectangular lot with an area of 700 m² has a length that exceeds its width by 15 meters. The equation that represents the problem is: a) x² + 15x + 700 = 0 b) x² + 15x – 700 = 0 c) x² + 700x + 15 = 0 d) x² + 700x – 15 = 0 e) 2x² – 15x – 700 = 0 05) (IFAM-25013) If x is positive and the inverse of x + 2 is x – 2, then x is: a) 2 b) 5 c) √2 d) √5 e) √7 06) (IFMA-2016) The quadratic equation 6x² + 5x + 1 = 0 has two distinct real roots. Knowing that the largest of them is also a root of the equation 3x² + kx = 0, the value of k will be: a) 1 b) – 1/2 c) – 3 d) 4 e) – 4 07) (IFC-2019) A rectangle 2 centimeters (cm) long and 1 centimeter (cm) wide will have both dimensions increased by x cm. With this increase, the area of the figure will be 20 cm². What is the measurement, in centimeters, of the increase in the rectangle's dimensions? a) 10 cm b) – 6 cm c) 3 cm d) – 3 cm e) 6 cm 08) (IFES-2013) There are two real numbers that are roots of the equation x² – 12x + 32 = 0. The quotient between the lowest and highest is: a) 2 b) 4 c) 1/2 d) 3/8 e) 0 09) (IFMA-2012) The IFMA math teacher stated that the grades of Fulano, Sicrano, and Beltrano are consecutive even numbers and that the square of the last grade is equal to the product of the first two plus 40. The highest grade is: a) 8 b) 10 c) 6 d) 4 e) 2 Here on the channel you will find several free math video lessons for elementary and high school, ENEM (National High School Exam), entrance exams in general, Federal Institutes, public exams, and OBMEP (Brazilian Exam). SUBSCRIBE TO THE CHANNEL HERE: https://www.youtube.com/c/EscoladeNum... Follow us on social media: ► PLATFORM (Website): https://www.thyagoaraujo.com ► Facebook:   / escoladenumeros   ► Instagram:   / escoladenumeros   ► Twitter:   / escoladenumeros   CONTACT EMAIL: [email protected] CREATED BY MATH PROFESSOR THYAGO ARAUJO FERREIRA: ESCOLA DE NÚMEROS is a YouTube channel that offers free Math lessons (Basic, ENEM, College Entrance Exams, Olympiads, and Public Exams) using simple, objective language. so that anyone (children, teenagers, and adults) can enjoy the content. COME BECOME A MATH FIEND! Best regards, happy studying, and see you in the next video. #Math #ElementaryEducation