2. Polynomials
easy

$x=-3$ માટે બહુપદી $3 x^{3}-4 x^{2}+7 x-5$ ની કિંમત શોધો .

A

$160$

B

$143$

C

$-143$

D

$-160$

Solution

Let $p(x)=3 x^{2}-4 x^{2}+7 x-5$

Now, $p(-3)=3(-3)^{3}-4(-3)^{2}+7(-3)-5$

$=3(-27)-4(9)-21-5$

$=-81-36-21-5$

$=-143$

Standard 9
Mathematics

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