Question

81 x^2 - 49 find the answer ​

Answer 1

Explanation:

$81 {x}^{2} - 49$

$= 81 {x}^{2} - {7}^{2}$

$= {(9x)}^{2} - {7}^{2}$

$= (9x + 7)(9x - 7)$

HOPE it will HELP you✌️

PLEASE mark the answer as BRAINLIEST. ✍️

Answer 2

Answer:

Given: 81x^2-49

Formula Used: (x+y)(x-y)=(x)^2-(y)^2

Solution:  

81x^2-49

=(9x)^2-(7)^2

=(9x+7)(9x-7)

If 81x^2-49=0

Then, x=-9/7 and x=9/7

HOPE YOU UNDERSTOOD HOW TO SOLVE THE QUESTION :)

PLS MARK ME AS BRAINLIEST :D