Factorise y^2 - y - 12
Looking for a combination of numbers that would multiply to give (-12_ but add together to give (-1)e.g. -6, 2?....-2,6....-4,3 = yes!thus,(y-4)(y+3)
LM
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(e*sqrt(e))/cuberoot(e^2)=e^k find k
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