1.

Find the product : a×a(2ab-5c)​

Answer»

a^2(2AB - 5c) = a^2 X 2ab + a^2 x (-5c)

                         = (a x 2) x a^2 x AB + [1 x (- 5)] x a^2 x C

                          = 2 x a^2b + (- 5) x a^2c

                          = 2a^3b - 5a^2c



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