Question

factorise & a² + a²-a-1​

Answer 1

(a-1)(2a+1)

Step-by-step explanation:

we have,

a²+a²-a-1

=2a²-a-1

=2a²-2a+a-1

=(2a²-2a)+(a-1)

=2a(a-1)+1(a-1)

= (a-1)(2a+1)

Hence, the factorizing factors of a²+a²-a-1 are a-1 and 2a+1

Answer 2

Answer:

I hope it is helpful to u

Step-by-step explanation:

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