Completing The Square Answers
Which of the following describes the relationship between b and c?
Given 2x² = -8, x is -22✔ 2i or -2i4i or -4i.
Solve (x – 3)2 = 49. Select the values of x.
x + ✔ 1/41/2X 2/3 =
Which values are solutions of the equation? Check all of the boxes that apply.
Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.
Choose an equation that would be used to solve 0 = -x2 + 10x – 8
Solve 2x2 + x − 4 = 0. x2 + x + = 0 x2 + 12x + = 2 + (x + )2 =
Which of the following expressions are perfect-square trinomials? Check all of the boxes that apply.
⇒ 2/3
answer
The quadratic function y = -x2 + 10x - 8 models the height of a trestle on a bridge. The x-axis represents ground level. To find where the section of the bridge meets ground level, solve 0 = -x2 + 10x - 8. Where does this section of the bridge meet ground level?
Solve 2x2 + x − 4 = 0. x2 + x + = 0 x2 + 12x + = 2 + (x + )2 =
Now that you have x² - 8x + 16 = 9 + 16, apply the square root property to the equation.
Solve 2x2 + x − 4 = 0. x2 + x + = 0 x2 + 12x + = 2 + (x + )2 =
Choose the solution to the equation.
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