Question

expand the given expressions using suitable identities (3x+5)(3x-5)​

Answer 1

Step-by-step explanation:

(3x+5)(3x-5)

identity (a+b)(a-b) = a square-b square

(3x+5)(3x-5) =( 3x2 -5 square)

Answer

3xsquare-25

Answer 2

Answer:

Given : Given Equation is (3x+5)(3x-5)

To Find: (3x+5)(3x-5)

Step By Step Explanation:

Using identity : (a+b)(a-b) = a² - b²

so,

Here a=3x & b=5

Substituting Values in Identity we will get,

(3x+5)(3x-5) = (3x) ² - (5)²

                    = 9x² - 25

9x² - 25