Solve x(x-1)-12=0

Expand the brackets to find x2-x-12=0Factorise the equation to find (x-4)(x+3)=0Check it expands to equal x2-x-12=0Find the value of x as:x+4=0 therefore X=4x-3=0 therefore X=-3

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Answered by Sarah W. Maths tutor

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