Download App

Factorisation — MATHEMATICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9MATHEMATICSFactorisation1 Mark
Question
Factorise : $a^2- 3a - 40$
✓

Answer

$a^2 - 3a - 40$
$= a^2 - 8a + 5a - 40$
$= a( a - 8 ) + 5( a - 8 )$
$= ( a - 8 )( a + 5 )$

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 "[1 Mark Question Answer]" from Factorisation→Factorisation — all question types→MATHEMATICS STD 9 question papers→ICSE Board STD 9 question papers→ICSE Board question paper generator→

Similar questions

Explain the meaning of the following terms: Variate
→
Express the following in the exponential form$:\log _{25} \sqrt{5}=\frac{1}{4}$
→
Express the following in the exponential form$:\log_b a = c$
→
Explain the meaning of the following terms: Class mark
→
Express the following in the logarithmic form$:5^4 = 625$
→
Expand : $( 5a - 3b + c )^2$
→
Explain the meaning of the following terms: Frequency
→
Find the slope of the line whose inclination is given as $ 45^\circ $
→
Write the lowest rationalising factor of : $5\sqrt2$
→
Separate the rational and irrational from among the following number:-
$\frac{-3}{5}$
→