Factorise: y^2-6 y-135 - Vidyadip

Question

Factorise:
$y^2-6 y-135$

✓

Answer

$y^2-6 y-135$
$=y^2-15+9 y-135$
$\{-135=-15 \times 9,-6=-15+9\}$
$=y(y-15)+9(y-15)$
$=(y-15)(y+9)$

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 Mark Question" from Factorisation→Factorisation — all question types→Maths STD 8 question papers→Maharashtra Board STD 8 question papers→Maharashtra Board question paper generator→

Similar questions

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

Divide $21 abc ^2$ by 7 abc .

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

Evaluate:
$\sqrt{1444}$

Find the measure of each exterior angle of a regular:
Polygon of 15 sides.

Express the following numbers in index form. : Sixth root of 9

Find the square root of:
$21\frac{2797}{3364}$

By which smallest number must the following numbers be divided so that the quotient is a perfect cube?
1600

Replace A, B, C by suitable numerals.
$\underline{ \ \ \ \ 4 \ \text{C B } \ 6\\+3 \ \ 6\ \ 9\text{ A}}\\ \ \ \ \ 8\ \ 1\ \ 7\ \ 3$

Using the method of successive subtraction examine whether or not the following numbers are perfect cubes:
345