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Division of a Polynomial by a Monomial

Find the valu...

Question

Find the value of the polynomial $y^{3} - 5 y - 2 y^{2} + 3$ when, $y = 1$

1

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Solution

The correct option is A $- 3$
Let $f (y) = y^{3} - 5 y - 2 y^{2} + 3$
When $y = 1$
$f (1) = 1^{3} - 5 (1) - 2 (1)^{2} + 3$
$= 1 - 5 - 2 + 3$
$= 4 - 7$
$= - 3$

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