Question
Using the standard formulae, expand:
$(4 a+9)^2$
$(4 a+9)^2$
✓
Answer
$16 a^2+81+72 a$
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
Using the standard formulae, expand:
$(7-2 x-3 y)^2$
→$(7-2 x-3 y)^2$
AB is a line segment. AX and BY are two equal line segments drawn on opposite sides of $A B$ such that $A X \| Y B$. If $A B$ and $X Y$ intersect at $M$, prove that :
(i) $\triangle AMX \cong \triangle BMY$
(ii) AB and XY bisect each other at M .
→(i) $\triangle AMX \cong \triangle BMY$
(ii) AB and XY bisect each other at M .
Using the standard formulae, expand:
$\left(5 x-\frac{2}{3 x}\right)^2$
→$\left(5 x-\frac{2}{3 x}\right)^2$
Without using trigonometric tables, find the values of:
$\left(3 \sin ^2 45^{\circ}+2 \cos ^2 60^{\circ}\right)$
→$\left(3 \sin ^2 45^{\circ}+2 \cos ^2 60^{\circ}\right)$
For the equation given below, find the slope and the $y-$intercept$:y = 7x - 2$
→Factorise : $a b\left(x^2+y^2\right)-x y\left(a^2+b^2\right)$
→By actual division, show that:
$\frac{107}{45}=2.3 \overline{7}$
→$\frac{107}{45}=2.3 \overline{7}$
Convert decimals into a vulgar fraction in its lowest term:
$2.016$
→$2.016$
Find each exterior angle of a regular polygon of $: 18$ sides
→Rationalise the denominators of : $\frac{\sqrt{3}-\sqrt{2}}{\sqrt{3}+\sqrt{2}}$
→