Which equations are true for x = –2 and x = 2? check all that apply.
x2 – 4 = 0
x2 = –4
3x2 + 12 = 0
4x2 = 16
2(x – 2)2 = 0

Which expression is rational? 6. , square root two, square root 14, square root 49

Two line segments are shown in the figure below. suppose that the length of the line along the x-axis is 6, and the length of the hypotenuse of the triangle is 10. what is the equation of the hypotenuse line (shown in red, below)?

Solve for the equation x. 2x + 22 = 4(x + 3)