Question 66 (g)

Find the value of the given polynomial at a = -2 and b = 3.

$\frac{a}{b} + \frac{b}{a}$

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Solution

Given, a = -2 and b = 3
So, putting a = -2 and b = 3 in the given expression, we get
$\frac{a}{b} + \frac{b}{a} = \frac{(- 2)}{3} + \frac{3}{(- 2)} = \frac{- 2}{3} - \frac{3}{2} = \frac{- 4 - 9}{6} = \frac{- 13}{6} [∵$ LCM of 2 and 3 is 6]

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Question 66 (b)

Find the value of the given polynomial at a = -2 and b = 3.

$a^{2} - 2 a b + b^{2}$

Question 66 (c)

Find the value of the given polynomial at a = -2 and b = 3.

$a^{3} + 3 a^{2} b + 3 a b^{2} + b^{3}$

Question 66 (f)

Find the value of the given polynomial at a = -2 and b = 3.

$\frac{a^{2} - b^{2}}{3}$

Question 66 (e)

Find the value of the given polynomial at a = -2 and b = 3.

$\frac{a^{2} + b^{2}}{3}$

Question 66 (h)

Find the value of the given polynomial at a = -2 and b = 3.

$a^{2} + b^{2} - a b - b^{2} - a^{2}$

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