Question

Resolva a equação -16x^2 +49=0

Answer 1

-16x² + 49 = 0
-16x² = - 49 (-1)
16x² = 49
x = √49/√16

S = {-7/4, 7/4}

Answer 2

-16x²+49=0 ∴ 16x²=49 ∴ x² = 49/16  ∴ x= +- √49/√16 ∴ x = +- 7/4 

x1= 7/4    x2 = -7/4