Download App

Factorisation — MATHS STD 8 — Question

ICSE BoardEnglish MediumSTD 8MATHSFactorisation3 Marks
Question
Factorise: $\left(6 \frac{2}{3}\right)^2-\left(2 \frac{1}{3}\right)^2$
✓

Answer

$ \left(6 \frac{2}{3}\right)^2-\left(2 \frac{1}{3}\right)^2$
$ =\left(\frac{20}{3}\right)^2-\left(\frac{7}{3}\right)^2$
$ =\left(\frac{20}{3}+\frac{7}{3}\right)\left(\frac{20}{3}-\frac{7}{3}\right)$
$ =\left(\frac{27}{3}\right)\left(\frac{13}{3}\right)=9 \times \frac{13}{3}=39$

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 "[3 marks sum]" from Factorisation→Factorisation — all question types→MATHS STD 8 question papers→ICSE Board STD 8 question papers→ICSE Board question paper generator→

Similar questions

Find the product : $(c+2)\left(c+\frac{3}{5}\right)$
→
factorise: $6 + 7b - 3b^2$
→
Find the cube$-$root of $9261$.
→
Find the product : $(1.1 x-0.3 y)(1.1 x+0.3 y)$
→
Find the product : $(3 x+4 y)(4 x+3 y)$
→
The area of an equilateral triangle is numerically equal to its perimeter. Find its perimeter correct to $2$ decimal places.
→
Factorise: $1 - 25 (a+ b)^2$
→
Simplify :
$\frac{a^{7+2 n} \cdot\left(a^2\right)^{3 n+2}}{\left(a^4\right)^{2 n+3}}$.
→
Find the least square number which is exactly divisible by each of the numbers $8,9,10$ and 15 .
→
If $25$ horses consume $18$ quintal in $36$ days, how long will $28$ quintal last for $30$ horses?
→