X3+7x2-4x-4,when x=3 – InterviewSolution

1.

X3+7x2-4x-4,when x=3

Answer»

Given

x = 3

To find

x³ + 7x² - 4x - 4

Solution

x³ + 7x² - 4x - 4
(3)³ + 7(3)² - 4(3) - 4
27 + 7(9) - 12 - 4
27 + 63 - 12 - 4
90 - 16
74

∴ The value of x³ + 7x² - 4x - 4 where x is 3 is 74

Discussion

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