If z=2, then the value of 5z3−4z+2 is

z=25z3−4z+2=5(2)3−4(2)+2=40−8+2=32+2

If z=2, then the value of 5z3−4z+2 is

z=25z3−4z+2=5(2)3−4(2)+2=40−8+2=32+2

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If $z = 2$ , then the value of $5 z^{3} - 4 z + \sqrt{2}$ is

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$32 \sqrt{2}$

$48 + \sqrt{2}$

$32 + \sqrt{2}$

$44 + \sqrt{2}$

answer is C.

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Detailed Solution

$z = 2$

$5 z^{3} - 4 z + \sqrt{2}$

$= 5 {(2)}^{3} - 4 (2) + \sqrt{2} = 40 - 8 + \sqrt{2} = 32 + \sqrt{2}$

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If z=2, then the value of 5z3−4z+2 is

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If $z = 2$ , then the value of $5 z^{3} - 4 z + \sqrt{2}$ is