Question

Evaluate using Suitable identities
(i) (3x)²-5²

Please help me out ​

Answer 1

Step-by-step explanation:

in above you get your ans

Answer 2

Answer:

$3x^2-5^2$

Way 1

We can put the formula a²-b²

a=3x

b=5

a²-b²= (a+b)(a-b)

=a²-b²= (3x+5)(3x-5)

a²-b²=9x²-15x+15x-25

a²-b²=9x²-25

Way 2

Straight away we can take out 3x²-5²

so 3x²=9x²

and 5²=25

So it would be 9x²-25

Hope you got it. It would be appreciated if you could mark my answer as the brainliest. Thanks