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13-08-2020
Mathematics

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Find the standard form of the quadratic equation: f(x)=(2x-1)(x+4)

Find the standard form of the quadratic equation fx2x1x4 class=

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Hrishii Hrishii

13-08-2020

Answer:

[tex] f(x) = 2x ^{2} + 7x - 4[/tex]

Step-by-step explanation:

[tex] \because \: f(x) = (2x - 1)(x + 4) \\ \therefore \:f(x) = 2x(x + 4) - 1(x + 4) \\ \therefore \:f(x) = 2x ^{2} + 8x - x - 4 \\ \therefore \:f(x) = 2x ^{2} + 7x - 4 \\ [/tex]

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