Question

(-21)×[(-4)+(-6)]=[(-21)×(-4)+[(-21)×[(-6)]​

Answer 1

Answer:

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Answer 2

Answer:

To prove : (-21)×[(-4)+(-6)] =[(-21)×(-4)+[(-21)×[(-6)]​

Proof :

First let us take LHS ;

LHS = (-21)×[(-4)+(-6)] = (-21) × ( -4-6)

= (-21) × (-10)

= 210 = LHS

Now let us take RHS ;

RHS = [(-21)×(-4)] + [(-21)×(-6)] =

= (84) + (126)

= 210

Clearly we can see that,

LHS = RHS

Thus,

(-21)×[(-4)+(-6)] =[(-21)×(-4)]+[(-21)×(-6)]​

Hence, verified.