Simplify a (a
2
+ a + 1) + 5 and find its value for (i) a = 0, (ii) a = 1
(iii) a = – 1.
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Answered by
2
Answer:
option. iii
Step-by-step explanation:
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Step-by-step explanation:
a(a^2+a+1)+5=a×a^2+a×a+a×1+5
a^3+a^2+a+5
(1) for a = 0,a^3+a^2+a×5 =(0)^3+(0)^2+(a)+5
=0+0+0+5=5
(2) for a=1, a^3 +a^2+a+5=(1)^3+(1)^2+(1)+5
1+1+1+5=8
(3) for a=-1,a^3+a^2+a+5=(-1)^3+(-1)^2+(1)+5
=-1+1-1+5=4
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