Using the formula for squaring a binomial, evaluate the following… - Vidyadip

Question

Using the formula for squaring a binomial, evaluate the following:
$(197)^2$

✓

Answer

$(197)^2$
$= (200-3)^2$
$= (200)^2-2 \times 200 \times 3+(3)^2$
$= 40000-1200+9$
$= 40009-1200$
$= 38809$

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 Operations on Algebraic Expressions→Operations on Algebraic Expressions — all question types→Maths STD 8 question papers→Maharashtra Board STD 8 question papers→Maharashtra Board question paper generator→

Similar questions

Factorise:
$x^2-17 x+16$

Which of the following triplets are pythagorean?
$(8,15,17)$

Find a rational number between $\frac{-1}{3}$ and $\frac{1}{2}$.

Factorize of the following expressions:
$x^2+x y+x z+y z$

Factorize:
$x^4 y^2-x^2 y^4-x^4 y^4 \text { is } x^2 y^2$

What is the number of diagonals in a:
Octagon.

In a simultaneous throw of a pair of dice, find the probability of getting:
a doublet of prime numbers.

Find the surface area of a cube whose edge is:
27cm

Write the following numbers in standard form:
0.0027

1 micron $=\frac{1}{1000000}\text{m}$. Express it in standard form.