Question

factorise 12x^3+4x^2-3x-1​

Answer 1

Here is the answer;

12x^3+4x^2-3x-1

=12x^3-3x+4x^2-1

=3x(4x^2-1)+4x^2-1

=(4x^2-1)(3+1)

=(2x+1)(2x-1)4

=4(2x+1)(2x-1)

Answer 2

Answer

(x-2) and (X+4)(X+5) are two factors of.........

after that factorise (x² + 9x + 20) by middle term split

• then after you get answer (X+4)(X+5)
• first factor we get = ( x-2 )
• and second = (X+4)(X+5)

Therefore, two factors are ( x-2 ) and (X+4)(X+5)

Hope that this Will help you

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