Question

Which is a factor of 144 − 49x2

Answer 1

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


`144-49x^2=12^2-(7x)^2=(12-7x)(12+7x)`

Answer 2

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

Explanation:

In the given question we have to find the factor of the expression ( 144 - 49x²).

We can rewrite the expression as

[(12)² - (7x)²]

Now we can write it as [a² - b² = ( a-b ) ( a+b )]

Therefore, expression will become [ (12-7x) (12 + 7x) ]

So factors will be either ( 12 - 7x ) or ( 12 + 7x )