Question

ANSWER IT IT IS SO IMPORTANT PLEASE ITS URGENT

ITS MY SCHOOL WORK PLEASE​

Answer 1

Answer:

7) EXPAND (4-1/3x)^3

= (4)^3 + (-1/3x)^3 + 3 x 4 x (-1/3x) + 3 x 4 x(-1/3x)^3

= 64 + (-1/27x^3) + 3 x 16 x -1/3 + 3 x 4 x 1/9x^2

=64 - 1/27x^3 - 16x + 4/3x^2

8) FACTORISE :- a) x^2 + 9x + 18

b) 2x^2 - 7x - 15

ANSWERS :- a) x^2 + 9x + 18

= x^2 + 3x + 6x + 18

= x( x + 3) + 6 (x+3)

THEREFORE , (x+6) (x-5)

b) 2x^2 - 7x - 15

= 2x^2 - 7x - 15

= 2x^2 - 10x + 3x - 15

= 2x (x-5) + 3 (x-5)

THEREFORE, (2x + 3) ( x - 5)

I HOPE IT WILL HELP YOU.

And , if it helped than please mark it as the brainliest answer.plz.