Question

What is the factor of 144-49x"2

Answer 1

The factor of 144-49x^2 is
(12-7x)(12+7x).

Answer 2

`(12+7x)(12-7x)`

Explanation:

`144-49x^2`

HEre we have 2 terms and also we have x^2

So we try to write this in square form

144 can be written as 12 times 12 = 12^2

49 can be written as 7 times 7 = 7^2

`144-49x^2`

`12^2-7^2x^2`

`12^2-(7x)^2`

Now apply difference of squares formula

`a^2 - b^2= (a+b)(a-b)`

`12^2 - (7x)^2= (12+7x)(12-7x)`