Question

16x²-49= plz answer quickly​

Answer 1

this may be the question to factorise:

16x² - 49

49 is a square number of 7 or, 7 x 7 = 49

and 16x² is a square number of 4x    i.e.  4x X 4x = 16x²

then the process can be,

    16x² -49

=   (4x)²  -  (7)²

according to the formula a² - b²= (a+b) (a-b)

a² - b²= (a+b) (a-b)

or,  4x² - 7² = (4x+7)(4x−7)

this is through the factorisation process, hope it helps!