9. find the value or values of y in the quadratic equation y2 + 4y + 4 = 7. a. y = −2 + √ 7 , y = −2 − √ 7 b. y = 2, y = 7 c. y = 2 + 2√ 7 , y = 2 − 2√ 7 d. y = −2√ 7 , y = 2√ 7

Which of the following expressions are equivalent ?

Use the discriminant to describe the roots of each equation. then select the best description. 2m2 + 3 = m double root real and rational roots real and irrational roots non-real roots

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]