1.

Find the product, using suitable properties:(a) 15 X (-25) X (-4)×(-10)(b) (-57)*(-19) + 57​

Answer»

A) [15*(-25)] * [(-4)*(-10)]
= (-375) * (40)
= -15000 is ans

b) (-57)* (-19) + 57
= [(-57)* (-19)] + 57
= (1083) + 57
= 1140 is ans



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