Which equation would be the best to solve by completing the square? x2 = 81

x2 + 11x = 40

3x2+4x=−2

x2 + 6x = 27

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

Look at attachment. has all info needed. need

Reflect the point (7,0) across the y-axis