REVIEWER ON FIRST QUARTERLY EXAM

Which of the following best describes a polynomial equation of degree two that can be written in the form ax² + bx + c = 0, where a, b, and c are real numbers and a ≠ 0?

• Linear Equation

• Quadratic Equation

• Linear Inequality

• Quadratic Inequality

Which of the following equations represents a polynomial equation of degree 2?

• x(x +5)=10

• 3x + 5y = 6

• 3x +1=2x + 2

• 3x +5 = 7

In the equation 5x + 2x² - 10 = 0, which is the quadratic term?

• 5x²

• 5x

• 2x²

• - 10

Which of the following is written in the standard form of a quadratic equation (ax² + bx + c = 0)?

• 3x² = 2x = 4

• x² + x = 7

• 3x² + 4x - 6 = 0

• x² + 5x + 6 > 0

Which of the following gives the correct solution to the equation (x - 4)² - 81 = 0 by using the extracting square root method?

• x = ± 9

• x = 13; x = -5

• x = ±9

• x = ±1

Which of the choices below is the factored form of 10x²+ 30x?

• 10x(x+3)

• 10x(x+3x)

• 5x(2+6)

• 5(2x2+6x)

Find the solutions of the equations x² + 10x = - 9 by factoring?

• x = - 1; x = - 9

• x = 1 ; x = 9

• x = - 3 ; x = - 3

• x = 3 ; x = 3

By solving the quadratic equation x²+8x-20=0? through factoring, what are its roots?

• x=2, x=10

• x=2, x=-10

• x=-2, x=-10

• x=-2, x=10

Find the roots of x²+4x-21=0?

• x=3, x=7

• x=-3, x=7

• x=3, x=-7

• x=-3, x=-7

What does the discriminant of a quadratic equation tell you about its root?

• It shows the sum of the roots

• It gives the product of the roots

• It tells whether the roots are real or complex

• It is the same as the coefficient ox x2