Question 155404
16x^2-49=0
(4X+7)(4X-7)=0
4X+7=0
4X=-7
X=-7/4 ANSWER.
4X-7=0
4X=7
X=7/4 ANSWER.
PROOF:
4(-7/4)^2-49=0
4*49/4-49=0
49-49=0
0=0