Question

Which equations are true for x = –2 and x = 2? Select two options x2 – 4 = 0 x2 = –4 3x2 + 12 = 0 4x2 = 16 2(x – 2)2 = 0

Answer 1

Answer: The equation x² = -4 is not true for x = -2 and x = 2 since the square of any real number cannot be negative. Therefore, the two equations that are true for x = -2 and x = 2 are:

x² - 4 = 0 (since (-2)² - 4 = 0 and (2)² - 4 = 0)

4x² - 16 = 0 (since 4(-2)² - 16 = 0 and 4(2)² - 16 = 0)

The other three equations are not true for x = -2 and x = 2.

Explanation: