How do you evaluate $x^{3} + 5$ $x^3 + 5$ when x = 4?

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How do you evaluate $x^{3} + 5$ $x^3 + 5$ when x = 4?

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Answer 1 · 2018-03-31T11:19:58

$69$ $69$

Explanation:

$substitute x = 4 into the expression$ $"substitute x = 4 into the expression"$

$\Rightarrow {(4)}^{3} + 5$ $rArr(color(red)(4))^3+5$

$= (4 \times 4 \times 4) + 5$ $=(color(red)(4)xxcolor(red)(4)xxcolor(red)(4))+5$

$= (16 \times 4) + 5 = 64 + 5 = 69$ $=(16xxcolor(red)(4))+5=64+5=69$

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How do you evaluate $x^{3} + 5$ $x^3 + 5$ when x = 4?

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