Finding the Zeros of a Quadratic Equation

When finding the "zeros" of a quadratic function, we use "x=..." to denote a point on the x-axis (otherwise known as the x-intercept).

• True.

• False.

The x-intercepts of a quadratic equation are known as the _____.

• vertices

• squares

• zeros

• formulas

What is another way to say "where a function crosses the x-axis"? CHECK ALL THAT APPLY.

• x-intercept

• zero

• solution

What are the steps to "find the zeros" of a quadratic?

• Sub in 0 and solve the expression.

• Factor then set each factor equal to zero and solve to find x-intercepts

• Set the expression equal to zero and solve

• Factor then set each factor equal to zero and solve to find y-intercepts

Solve for the values of x:

(x - 5)(x - 1) = 0

• (5, 0) or (1, 0)

• (-5, 0) or (-1, 0)

• (0, -5) or (0, -1)

• (0, 5) or (0, 1)

Solve for the values of x:

(x - 3)(x + 6) = 0

• x=-3 and x=-6

• x=3 and x=-6

• x=-3 and x=6

• x=3 and x=6

What are the solutions?

(2x + 5)(5x - 2) = 0

• x = -5/2, -2/5

• x = -5/2, 2/5

• x = 5/2, 2/5

• x = 5/2, -2/5

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

What are the solutions to the quadratic:

(x+2)(x-10) = 0

• -2 and 10

• -2 and -10

• 2 and 10

• 2 and -10

Factor, then find the zeros of the function:

x²-x-12 = 0

• -3 and 4

• 3 and 4

• -4 and -3

• -3

Factor x²+6x+9 = 0 and identify the solution.

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