Question

answer with solution 50 point
​

Answer 1

Step-by-step explanation:

(Q.4)

1). (8a+3b)²

=64a²+9b²+48

--> using (a+b)²=a²+b²+2ab

2). (X+x²/2)²= x²+x²/4+2(x+x²/2)

--> using (a+b)²=a²+b²+2ab

3). (a²b-bc²)²= a⁴b²+b²c⁴-2(a²b-bc²)

--> using (a+b)²=a²+b²-2ab

4). (2a/3b+2b/3a)²= 4a²/9b²+ 4b²/9a² +2(2a/3b+2b/3a)

--> using (a+b)²=a²+b²+2ab

5). (3a/2-5b/4)²= 9a²/4+ 25b²/16

9a²/4+ 25b²/16 -2(3a/2-5b/4)

--> using (a+b)²=a²+b²-2ab

6). (a²+bc)(a²-bc)= a⁴-bc²

-->using a²-b²= (a+b)(a-b)

7). (x⁴+2/x²)(x⁴-2/x²)= x^8-(2/x²)²

-->using a²-b²= (a+b)(a-b)

9). (102)²= 10404

10). 79²-69²= 1480

I tried my knowledge best.

sorry if there is any mistake &

I don't know the 8th ques.

Hope this is helpful to you.

plz mark me the branliest.

Thank you

Answer 2

Hope it will help you so plzz follow me and mark it as brainlist answer