Question

Which of the equations has the roots {4, -4}?
Answer
A. (x - 1)2 = 9
B. -x2 + 8 = 0
C. x2 + 16 = 0
D. -x2 + 16 = 0

Answer 1

If an equation has roots \(x=r_1\) and \(x=r_2\), then it can be written as:\[(x-r_1)(x-r_2)=0\]Use this to find the answer.