Question

please answer 5 th sum only..many of them gave answer the a+b .. Can anyone say the explanation ...​

Answer 1

Answer:

1.(p+2)²=p²-2.p.2+(2)²

=p²-4p+4

2.(6²-x²)={(3)²-(x)²}

=(3+x) (3-x)

3.(a+b)²= (a+b)×4ab

Answer 2

Answer:

(a+b)^2= (a+b) X (a+b)

Step-by-step explanation:

We know that (a+b)^2=a^2+2ab+b^2

=a^2+ab+ab+b^2

=[a(a+b)] + [b(a+b)]

Here, (a+b) is common.

We can take (a+b) one time by adding the a in first equation & b in second equation.

=(a+b) X (a+b)

Therefore, (a+b)^2=(a+b) X (a+b)

Note that a^2 means square of a.