Using the formula (a+b)^2= (a^2+2 a b+b^2 ), evaluate: (310)^2 - Vidyadip

Question

Using the formula $(a+b)^2=\left(a^2+2 a b+b^2\right)$, evaluate:
$(310)^2$

✓

Answer

$(310)^2$
$=(300+10)^2$
$=(300)^2+2 \times 300 \times 10+(10)^2$
$=(90000+6000+100)$
$=96100$

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" from Squares and Square Roots→Squares and Square Roots — all question types→Maths STD 8 question papers→Maharashtra Board STD 8 question papers→Maharashtra Board question paper generator→

Similar questions

Subtract:
$\frac{-5}{6}\ \text{from}\ \frac{1}{3}$

Divide and write the quotient and the remainder.
$\left(2 y^3+4 y^2+3\right) \div 2 y^2$

Factorise:
$(1+3)^2-(1-m)^2$

Find the measure of each interior angle of a regular polygon having:
15 sides.

Test the divisibility of the following numbers by 7:
98175

Find the square root of number by using the method of prime factorisation:
8100

Factorise:
$y^2-6 y-135$

Find the continues products:
$(x+1)(x-1)\left(x^2+1\right)$

Factorise:
$a b\left(x^2+y^2\right)-x y\left(a^2+b^2\right)$

Solve:
$16 a ^2- b ^4$