3x^2-12x-36 factorise
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Answered by
13
3 (x^2-4x-12)
3 (x^2-6x+2x-12)
3 (x (x-6)+2 (x-6))
3(x-6)(x+2)
hope it helps u dear ❤ ❤
3 (x^2-6x+2x-12)
3 (x (x-6)+2 (x-6))
3(x-6)(x+2)
hope it helps u dear ❤ ❤
Answered by
4
Answer:
3 ( x - 6 )( x + 2 )
Step-by-step explanation:
3 x² - 12 x - 36
Take 3 as common :
⇒ 3 ( x² - 4 x - 12 )
Now split - 4 x into - 6 x + 2 x
⇒ 3 ( x² - 6 x + 2 x - 12 )
⇒ 3 [ x ( x - 6 ) + 2 ( x - 6 ) ]
⇒ 3 [ ( x - 6 )( x + 2 ) ]
This is know as middle term factorisation .
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