Quadratic Solving Multiple Choice

What are the zeros of f(x) = x^2 - 2x - 15?

• 5, -3

• 5, -3

• -3, -5

• -5, 3

Given a, b, and c are real numbers, and a is not equal to 0, which of the following is the standard form of quadratic equation?

• ax^2 + b + c = 0

• ax^2 + bx + c = 0

• a + bx + c^2 = 0

• x^2 + bx + c = 0

Which of the following is the equivalent to x^2 + 4x - 7 = 0?

• (x + 1) (x - 7) = 0

• (x + 4) (x - 3) = 5

• (x + 5) (x - 3) = 6

• (x + 1) (x + 3) = 10

When the quadratic function (x + 5) (2x - 3) = 2 (x + 1) is written in standard form, what are the values of a, b, and c?

• a = 1, b = 3, c = -10

• a = 0, b = 4, c = -8

• a = 3, b = 2, c = -5

• a = 2, b = 5, c = -17

Which of the following will make the expression x^2 + 6x + ___ a perfect square trinomial?

• 12

• 16

• 9

• 4

What is the correct quadratic formula?

• x = (b ± √(b² + 4ac)) / (2a)

• x = (2a ± b) / √(b² - 4ac)

• x = (b ± 4ac) / (2√(b²))

• x = -b ± √(b² - 4ac) / 2a

The roots of quadratic equation are imaginary. Which of the following statements is true about discriminant equation?

• The discriminant is greater than zero.

• The discriminant negative.

• The discriminant is a positive integer.

• The discriminant is equal to zero.

The roots of a quadratic equation are 2 and 5. Which of the following statements is true about the discriminant of equation?

• The discriminant is negative.

• The discriminant is positive and perfect square.

• The discriminant is positive and not perfect square.

• The discriminant is zero.

The discriminant of a quadratic equation is 34. Which of the following is true about it's roots?

• The roots are imaginary and distinct.

• The roots are real, irrational and unequal.

• The roots are real, rational and unequal.

• The roots are real, rational and equal.

In the quadratic equation ax^2 + bx + c = 0, Which of the following is the sum of it's roots?

• -b/a

• -c/a

• b/a

• b+c