Question

factorise x cube minus x square minus A X + X + a - 1

Answer 1

ax+x+a-1=0
ax+x+a=1
ax+x=1-a
x+x=1-a/a
2x=1-1
2x=0
x=0+2
x=2

its cube
x=(2)3
x=2*2*2
x=8

its square
x=(2)2
x=2*2
x=4

Answer 2

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