Question

find the value of p if the value of x⁴ -3x³ - px - 5 is equal to 23 when x = -2..
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Answer 1

Question :

Find the value of p if the value of x⁴ -3x³ - px - 5 is equal to 23 when x = -2.

Solution :

p(x) = x⁴ -3x³ - px - 5

Putting x= - 2

$\tt \implies$ p(-2) = (-2)⁴-3(-2)³ - p(-2) - 5

$\tt \implies$ 23 = 16 + 24 +2p - 5

$\tt \implies$ 23 = 2p + 35

$\tt \implies$ 2p = 23 - 35

$\tt \implies$ 2p = -12

$\tt \implies$ p = -6

Value of p is - 6.

Answer 2

Answer:

Hi Sneha

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