Question
Factorise : $9(x+a)^2-4 x^2$
✓
Answer
$(5 x+3 a)(x+3 a)$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Points $A (-3, -2), B (-6, a), C (-3, -4)$ and $D (0, -1)$ are the vertices of quadrilateral $\text{ABCD};$ find a if $'a\ '$ is negative and $AB = CD.$
→Express the following in terms of trigonometric ratios of angles between 0° and 45°.
$\sec 63^{\circ}+\operatorname{cosec} 49^{\circ}$
→$\sec 63^{\circ}+\operatorname{cosec} 49^{\circ}$
In the adjoining figure, ABCD is a trapezium in which $AB \| DC$ and E is the mid-point of AD . If $EF \| AB$ meets BC at F , show that F is the mid-point of BC .
→In the given figure, ABCD is a square and $\triangle PAB$ is an equilateral triangle.
(i) Prove that $\triangle APD \cong \triangle BPC$.
(ii) Show that $\angle DPC =15^{\circ}$.
→(i) Prove that $\triangle APD \cong \triangle BPC$.
(ii) Show that $\angle DPC =15^{\circ}$.
If $A=60$ and $B=30$, prove that:
$\tan (A-B)=\frac{\tan A-\tan B}{1+\tan A \tan B}$.
→$\tan (A-B)=\frac{\tan A-\tan B}{1+\tan A \tan B}$.
Without using tables, find the value of the following: $\frac{4}{\cot ^2 30^{\circ}}+\frac{1}{\sin ^2 60^{\circ}}-\cos ^2 45^{\circ}$
→Write the logarithmic equation for:$E=\frac{1}{2} m v^2$
→Two adjacent sides of a parallelogram are $20\ cm$ and $18\ cm.$ If the distance between the larger sides is $9\ cm,$ find the area of the parallelogram. Also, find the distance between the shorter sides.
→If $A = 30^\circ ;$ show that:$ \cos 2A = \cos^4A - \sin^4A$
→Explain the meaning of the following terms: True Class Limits