Question

evaluate x if:36x=78^2-42^2

Answer 1

36x=6084-1764
36x=4320
x= 4320/36
x=120
I hope it help u

Answer 2

Given:

⇒ $36x=78^2-42^2$

To  find:

The value of x = ?

Solution:

As we know,

⇒ $36x=78^2-42^2$

On solving the squares, we get

⇒ $36x=6084-1764$

⇒ $36x=4320$

⇒     $x=\frac{4320}{36}$

⇒     $x=120$

Thus the value of x is "120".