Question

Help with this please.

Answer 1

(x+2)^2-7(x-12)^

Answer 2

scratch that (x+2)^2-7(x-1)^2

Answer 3

u want help in simplifying ?

Answer 4

yes

Answer 5

(a+b)^2 = a^2+b^2+2ab
(a-b)^2 = a^2+b^2-2ab

u familiar wid above formulae ?

Answer 6

im still confused.. sorry..

Answer 7

(x+2)^2-7(x-1)^2

ok. first term is in the form : (a+b)^2

u notice that ?

Answer 8

a=x
b=2

Answer 9

(x+2)^2 - 7(x-1)^2

(x^2+2^2+2.x.2) - 7(x^2+1^2-2.x.1)

Answer 10

i have just applied the formulae,

(a+b)^2

(a-b)^2

Answer 11

im so confused...

Answer 12

hmm its ok. il put the solution step by step... see if it makes sense

Answer 13

ok thank you.

Answer 14

\((x+2)^2 - 7(x-1)^2\)

\((x^2+2^2+2.x.2) - 7(x^2+1^2-2.x.1)\)

\((x^2+4+4x) - 7(x^2+1-2x)\)

\(x^2+4+4x- 7x^2 - 7 + 14x)\)

\(-6x^2+18x - 3\)

Answer 15

@ganeshie8

Answer 16

thnx