Question

4. Factorise :
(1) 12x2 - 7x+1
(ii) 2x + 7x +3
(iii) 6x2 + 5x-6
(iv) 3r-x-4​

Answer 1

Answer:

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(1) 12x2 - 7x+1

${12x}^{2} - 4x - 3x + 1$

$4x(3x - 1) - 1(3x - 1)$

$(3x - 1)(4x - 1)$

ii) 2x2+ 7x +3

${2x}^{2} + 6x + x + 3$

$2x(x + 3) + 1(x + 3)$

$(x + 3)(2x + 1)$

iii) 6x2 + 5x-6

${6x}^{2} + 9x - 4x - 6$

$3x(2x + 3) - 2(2x + 3)$

$(2x + 3)(3x - 2)$

iv) 3r-x-4

${3x}^{2} - 4x + 3x - 4$

$x(3x - 4) + 1(3x - 4)$

$(3x - 4)(x + 1)$