Question

use the formula to multiply : (b+2) (b-1)​

Answer 1

Answer:

Solution :-

=b(b+2) -2(b+1)

=b^2 + 1b + (b+1)

=b^2 + b-2(b+1)

=b^2 + b-2b - 2

=b^2- b - 2 ......

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