I keep on arriving at different solutions to the answer sheet - could someone please help me? Factorise the following: 2(x - 1)² - 9(x - 1) - 5
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Originally Posted by beefsupreme I keep on arriving at different solutions to the answer sheet - could someone please help me? Factorise the following: 2(x - 1)² - 9(x - 1) - 5 Substitute $\displaystyle (x-1)=y$ Your term becomes: $\displaystyle 2y^2-9y-5 = (2y+1)(y-5)$ Now re-substitute to get the final result.
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