Factorise: x^2-4 x-12 - Vidyadip

Question

Factorise:
$x^2-4 x-12$

✓

Answer

$x^2-4 x-12$
$=x^2-6 x+2 x-12$
$\{-12 = -6 × 2, -4 = -6 + 2\}$
$= x(x - 6) + 2(x - 6) $
$= (x - 6)(x + 2)$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Factorisation→Factorisation — all question types→MATHS STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

$\underline{\ \ \ \ \ \text{B}\ \ \text{A} \ \ \text{A}\\\text{+}\ \ \text{B}\ \ \text{A} \ \ \text{A}\ }\\\underline{\ \ \ \ 3\ \ \ \text{A}\ \ \ 8\ }$

Observe the tables given below and in each case find whether $x$ and $y$ are inversely proportional.

$x$	$6$	$10$	$14$	$16$
$y$	$9$	$15$	$21$	$24$

Simplify:$\Big(\frac{3}{4}\text{x}-\frac{4}{3}\text{y}\Big)^2+2\text{xy}$

Making use of the cube root table, find the cube root $0.27$

Write down the number of vertices of the following figures: Cuboid.

Simplify:$\frac{16\text{m}^3\text{y}^2}{4\text{m}^2\text{y}}$

Solve the following linear equations :
$\frac{x}{2}-\frac{1}{5}=\frac{x}{3}+\frac{1}{4}.$

Subtract:
$2 x^3-4 x^2+3 x+5$ from $4 x^3+x^2+x+6$

Find the measure of each exterior angle of a regular: Pentagon.

Find the square root of the following by long division method:$3915380329$