# Quiz 26: Quadratic and Cubic Equations

Business

Free

Multiple Choice

B

Q 2Q 2

Which of the following options represents a quadratic equation when a = 3, b = -3 and c = 4?
A) y = 3x

^{2}+ 3x +4 B) y = 3x^{2}- 3x - 4 C) y = 3x^{2}- 3x + 4 D) y = 3x^{2}+ 3x - 4Free

Multiple Choice

C

Free

Multiple Choice

C

Q 4Q 4

The formula y = 2x

^{2}+ 5x +2 has two solutions for x. One is x = -3.5. Find the other using the formula method. A) x = 1 B) x = 1.5 C) x = 2 D) x = 2.5Free

Multiple Choice

Q 5Q 5

What is the only solution for the equation y = -2x

^{2}+ 4x - 2? A) x = -0.5 B) x = 0 C) x = 0.5 D) x = 1Free

Multiple Choice

Q 6Q 6

A quadratic equation is factorized into the for (2x + 3)(x + 4) = 0. Which option below is the equivalent equation in the form ax

^{2}+ bx + c = 0? A) x^{2}+ 11x + 12 = 0 B) x^{2}+ 11x + 7 = 0 C) 2x^{2}+ 11x + 12 = 0 D) 2x^{2}+ 11x + 7 = 0Free

Multiple Choice

Q 7Q 7

A quadratic equation is factorized into the form (x - 5)(x + 6) = 0. Which option below shows the correct pair of solutions for x?
A) x = 5; x = -6
B) x = 5; x = 6
C) x = -5; x = -6
D) x = -5; x = 6

Free

Multiple Choice

Q 8Q 8

When a quadratic equation is solved graphically, which feature of the graph represents the solution(s) to the equation?
A) The mean gradient of the curve
B) The point(s) at which the graph crosses the vertical (y) axis
C) The point(s) at which the graph crosses the horizontal (x) axis
D) The area between the curve and the horizontal axis

Free

Multiple Choice

Q 9Q 9

Which is the correct form of a cubic equation when a = 3; b = -6; c = 2; d = 4?
A) y = 3x

^{3}+ 6x^{2}+ 2x + 4 B) y = 3x^{3}- 6x^{2}- 2x + 4 C) y = 3x^{3}+ 6x^{2}+ 2x - 4 D) y = 3x^{3}- 6x^{2}+ 2x + 4Free

Multiple Choice

Free

Multiple Choice