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Good evening solve question 9 |
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Answer» i) 0Step-by-step explanation:VERIFY: (i) x^3+y^3=(x+y)(x^2-xy+y^2)=x^3+y^3=x^3+y^3[(x+y)(x^2-xy+y^2)=x^3+y^3]=x^3-x^3+y^3=y^3[x^3 is transposed to the other SIDE]=y^3=y^3=y^3-y^3=0[y^3 is transposed to the other side]=0=0=0Answer: 0(ii) x^3-y^3=(x-y)(x^2+xy+y^2)=x^3-y^3=x^3-y^3[(x-y)(x^2+xy+y^2)=x^3-y^3]=x^3-y^3+y^3=x^3[-y^3 is transposed to the other side]=y^3-y^3=x^3-x^3[x^3 is transposed to the other side]=0=0=0Answer: 0 |
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