Factorise x^2 −x−12

To factorise you need to look at common factors. And it needs to be put into the expression (x+/- y)(x+/- v)For X2-X-12, you need two numbers that times to make -12 and add to make -1-1X12, -12X1, -6X2, -2X6, -4X3, -3X4Out of the options -4 and 3 add to make -1Therefore, (x-4)(x+3) is the factorisation

Answered by Lauryn P. Maths tutor

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simplify fully: (3x^2 - 8x -3)/(2x^2 -6x)


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Factorise and solve (x^2) - 8x + 15 = 0.


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