Question

Multiply the following algebraic expression :
$(a^{2} + b^{2}) \: and \: (x^{3} - y^{3} + z^{3})$
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Answer 1

Well while solving questions related to ratios,always keep in the mind about the equality between the variables

Consider first case

A:B=5:9

Can also be written as 5*4:9*4

Well I just multiplied numerator and denominator by 4 so actually I multiplied by 1

In the same way B:C can also by multiplied by 9 on both numerator and denominator giving the ratio

B:C =4*9:7*9

Therefore,

A:B=20:36

And B:C=36:49

Since on both ratio B is same

Hence A:B:C=20:36:49

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