Question

Plz help :) easy medal
Solve for x 16x2 − 81 = 0.

Answer 1

A. x = 4, 9
B. x = −4, −9
C. x = 9 over 4, x = −9 over 4
D. x = 81 over 16, x = −81 over 16

Answer 2

difference of square \[\huge\rm a^2- b^2= (a+b)(a-b)\] take square root of both terms
write your answer in two parentheses
(square root of first term + sqrt of 2nd term) (sqrt of 1st term - sqrt of 2nd term)

Answer 3

and then set both parentheses equal to zero solve for x!

Answer 4

ty for your help :) @Nnesha

Answer 5

my pleasure