Question

q(n)=n³+6n²+8n-8 at n=-5/2​

Answer 1

$\huge\mathfrak{Bonjour!!}$

$\huge\bold\pink{ANSWER:}$

✿ Substituting -5/2 at the place of the variable "n" for the given polynomial, q(n)=n³+6n²+8n-8...:-

⏩q(-5/2)= (-5/2)³+6(-5/2)²+8(-5/2)-8

→q(-5/2)= -125/8 +6×25/4 -4×5 -8

→q(-5/2)= -125/8 +3×25/2 -20-8

→q(-5/2)= -125/8 +75/2 -28

→q(-5/2)= 175/8 -28

→q(-5/2)= -49/8 [The required solution..]

#Alternative form:-

$- 6 \times \frac{1}{8}$

and,

$- 6.125$

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Hope it helps...:-)

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