Download App

Factorisation — MATHEMATICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9MATHEMATICSFactorisation2 Marks
Question
Factorise $:a^3+ 0.064$
✓

Answer

$a^3 + 0.064$
$= (a)^3 + (0.4)^3$
$= ( a + 0.4 )[ (a)^2 - a x 0.4 + (0.4)^2 ] [ \because a^3 + b^3 = ( a + b )( a^2 - ab + b^2) ]$
$ = ( a + 0.4 )( a^2 - 0.4a + 0.16 )$

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 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

If an angle of a parallelogram is two-third of its adjacent angle, find the angles of the parallelogram.
→
Evaluate the following$: \frac{\cos 34^{\circ} \cos 35^{\circ}}{\sin 57^{\circ} \sin 56^{\circ}}$
→
Express each of as a single logarithm:
$2 \log _{10} 8+\log _{10} 36-\log _{10}(1.5)-3 \log _{10} 2$
→
Construct a rectangle ABCD in which diagonal AC = 6.3 cm and the angle between the two diagonals is 50.
→
Factorise:
$25 x^2-64 y^2$
→
Solve for $x$ :
$\frac{\log x}{\log 5}=\frac{\log 9}{\log \left(\frac{1}{3}\right)}$
→
Using the standard formulae, expand:
$\left(a^2-\frac{b}{2}\right)^2$
→
Solve for x:
$2^{(5 x-1)}=4 \times 2^{(3 x+1)}$
→
Factorise:
$a^2+b^2-c^2-d^2+2 a b-2 c d$
→
If $\left(x^2+\frac{1}{25 x^2}\right)=8 \frac{3}{5}$, find the values of : (ii) $\left(x^3+\frac{1}{125 x^3}\right)$.
→