Question

Example:
i)(x+a)(x+b)=x^2+x(a+b)+ab
ii) (a+b)^2=...
There are many more
Can you help to list it down...

Answer 1

@ikram002p

Answer 2

ok ?
what is ur Qn exactly ?

Answer 3

I just want to know all the possible formula*
For instance
(a+b)^2= a+2ab+c

Answer 4

you don't need to memorize the first formula

Answer 5

(x+a)(x+b) FOIL this.

Answer 6

\(( a+b)^2=a^2+2ab+b^2 \) ?

Answer 7

OH my !

Answer 8

i memorize only below formula :
1) \(\large (a+b)^2 = a^2 + 2ab + b^2\)
2) \(\large (a-b)^2 = a^2 - 2ab + b^2\)
3) \(\large (a+b+c)^2 = a^2 +b^2+c^2+2ab+2bc+2ca\)

Answer 9

Oh, and one more very important identity :
4) \(\large a^2-b^2 = (a+b)(a-b)\)

Answer 10

ok so his Qn what what formula he need to memorize ?

Answer 11

Yes @ikram002p

Answer 12

ic !
i only memorize binomial thm :P jk


only earn FOIL concept , do u know it ?