Question

$1-2a-2b-3a(a+b)^2$

Factorise it.

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Answer 1

here is ur ans❤

2a-2b-3(a+b)^2

1-2(a+b) - 3(a+b)^2

1-3(a+b) + (a+b) - 3(a+b)^2

1((1-3(a+b)) + (a+b) ((1-3(a+b))

((1-3(a+b)) ((1+(a+b))

(1-3a-3b) (1+a+b)

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Answer 2

$1-2a-2b-3a(a+b)^2$

$1 - 2(a + b) - 3a {(a + b)}^{2}$

$let \: a + b = x$

$1 - 2x - 3 {x}^{2}$

$1 - 3x + 1x - 3 {x}^{2}$

$1(1 - 3x) + x(1 - 3x)$

$(1 + x)(1 - 3x)$

Now put the values....

(1+a+b)(1-3a-3b)