Question

3x^2-x-4
please solve it..
I'll mark you brilliant​

Answer 1

3²−−4

3x^{2}{\color{#c92786}{-x}}-4

3x2−x−4

3²+3−4

−4

3x^{2}+{\color{#c92786}{3x}}{\color{#c92786}{-4x}}-4

3x2+3x−4x−4

2

Common factor from the two pairs

3

Rewrite in factored form

Solution

(3−4)

(+1)

Answer 2

Answer:

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$\sf3x {}^{2} - x - 4$

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Splitting by mid term

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$\rightarrow \sf3x {}^{2} - x - 4$

$\sf = 3x {}^{2} + 3x - 4x - 4$

$\sf = 3x(x + 1) - 4(x + 1)$

$= \sf(x + 1)(3x - 4)$

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$\frak{ \red{hope \: it \: helps...}}$

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