Question

find (x+9)(x-12) using suitable identity!! ​

Answer 1

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=x(x-12)+9(x-12)

=x²-12x+9x-108

=x²-3x-108

Therefore the answer is x²-3x-108.

Answer 2

Answer:

(x+9)(,x-12)

=x^2+(9-12)x+9×(-12)

=x^2-3x-108 ans..

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