Question

a^3+a^2+a+1=40 find value of a
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Answer 1

Step-by-step explanation:

a^3+a^2+a+1=40

or,a^2(a+1)+1(a+1)=40

or,(a+1)(a^2+1)=40

Either,a+1=40

or, a=40-1

a=39

Or,a^2+1=40

or,a^2=40-1

or,a^2=39

a=√39

Hence,

a=39 or, √39