Question

a²+ax-x-1 descompuneți in factori va rog
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Answer 1

${a}^{2} + ax - x - 1 =$

$x \times (a - 1) + {a}^{2} - 1$

$x \times (a - 1) + (a - 1) \times (a + 1) =$

$= (a - 1) \times (x + a + 1)$

Answer 2

a

2

+ax−x−1=

x \times (a - 1) + {a}^{2} - 1x×(a−1)+a

2

−1

x \times (a - 1) + (a - 1) \times (a + 1) = x×(a−1)+(a−1)×(a+1)=

= (a - 1) \times (x + a + 1)=(a−1)×(x+a+1)