решите:a x b+c x(a-b)

Question

решите:a x b+c x(a-b)

Answer 1

axb + cx(a-b)

axb+cxa-cxb

x(ab+ac-cb) 

Answer 2

a x b+c x(a-b)=axb+cxa-cxb=x(ab+ca-cb)

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