Question

Use the difference of squares identity to write this polynomial expression in factored form: 9x2 − 49.

Answer 1

9x^2-49
It equals:
(3x+7)(3x−7)
Hope this helps!

Answer 2

Answer:

$(3x+7)(3x-7)$

Step-by-step explanation:

Use the difference of squares identity to write this polynomial expression in factored form:  $9x^2-49$

Difference of square formula is

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

9 can be written as 3^2

49 can be written as 7^2

$9x^2-49$

$(3x)^2-7^2$

The value of 'a' is 3x  and b is 7

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

$(3x)^2-7^2=(3x+7)(3x-7)$

$(3x+7)(3x-7)$