Question

How do you factor `x^2 - 49`?

Answer 1

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

Explanation:

To factorize this, we need to use algebric formula which is given by;
`a^2-b^2 = (a-b)(a+b)`
Now, we have;
`x^2-49`
We know that `49=7X7=7^2`, hence we get
`=x^2-7^2`
Now applying above formula, we get;
`=(x-7)(x+7)`
This is our final answer.