Question

Solve the equation for all values of x.
(x2 – 16)(x2 + 49) = 0

Answer 1

-4, 4, 7i, -7i

Explanation:

Basically any or each bracket must be equal to 0. If x^2+16 = 0, then x can be 4 and -4, and if x^2+49 is 0, then x =7i or -7i