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Finding the Value of an Expression

e Find the va...

Question

Question 67 (e)

Find the value of the given polynomial at m = 1, n = -1 and p = 2

$m^{3} + n^{3} + p^{3} - 3 m n p .$

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Solution

Given, m = 1, n = -1 and p = 2
So, putting m = 1, n = -1 and p = 2 in the given expression, we get
$m^{3} + n^{3} + p^{3} - 3 m n p = (1)^{3} + (- 1)^{3} + (2)^{3} - 3 (1) (- 1) (2) = 1 - 1 + 8 + 6 = 14$

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Finding the Value of an Expression

Standard VII Mathematics

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