$3 x^{2} - 17 x + 20$ can be factorised as:

(x + 4) (3 x + 5)

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(x - 4) (3 x - 5)

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(x - 4) (x - 5)

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None of these

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Solution

The correct option is B $(x - 4) (3 x - 5)$
$3 x^{2} - 17 x + 20 = 3 x^{2} - 12 x - 5 x + 20$
$= 3 x (x - 4) - 5 (x - 4) = (x - 4) (3 x - 5)$

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Similar questions

5 (- 3 x - 2) - (x + 1) = - 4 (3 x + 5) + 13

Use suitable identities to find the following products:

(i) (ii)

(iii) (iv)

(v)

(3 x + 4) (3 x - 5)

= 9 x^{2} - 3 x - 20

∣ ∣ ∣ \begin{matrix} 43 \end{matrix} \begin{matrix} x + 1 x \end{matrix} ∣ ∣ ∣ = 5

Solve and find x and y:-

1/2(x+2y) +5/4(3x-2y)=-3/2 -------(i)

5/4(x+2y) - 3/5(3x-2y)=61/60 ---------(ii)

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