Q....f(x) = x⁴ - 5x + 70f(8) = .......... Question from @hadidsyarif12

hadidsyarif12 @hadidsyarif12

July 2022 2 15 Report

Q.

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f(x) = x⁴ - 5x + 70
f(8) = ...

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ItzYourDumb

f(x) = x⁴ - 5x + 70

f(8) = 8⁴ - 5(8) + 70

f(8) = ( 8² × 8² ) - 40 + 70

f(8) = ( 64 × 64 ) - 40 + 70

f(8) = 4.096 - 40 + 70

f(8) = 4.056 + 70

f(8) = 4.126

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2 votes Thanks 2

Lonely0105

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$\it \: f(x) = x {}^{4} - 5x + 70$

$\it \: f(8) = 8 {}^{4} - 5(8) + 70$

$\it \: f(8) = (8 \times 8 \times 8 \times 8) - (5 \times 8) + 70$

$\it \: f(8) = (64 \times 64) - 40 + 70$

$\it \: f(8) = 4096 - 40 + 70$

$\it \: f(8) = 4056 + 70$

$\it \: f(8) = 4126$

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4 votes Thanks 4

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