Using suitable identities, evaluate the following. (339)^2- (161)… - Vidyadip

Question

Using suitable identities, evaluate the following. $(339)^2- (161)^2$

✓

Answer

$(339)^2-(161)^2$
$=(339+161)(339-161)$
$=500 \times 178$
$=89000$

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 Marks Questions" from Algebraic Expressions, Identities and Factorisation→Algebraic Expressions, Identities and Factorisation — all question types→MATHS STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

In a city, $30 \%$ are females, $40 \%$ are males and remaining are children. What per cent are children?

Solve:
$ 16 x^2-25 y^2$

The shape of the top surface of a table is a trapezium. Find its area, if its parallel sides are $1\ m$ and $1.2\ m$ and perpendicular distance between them is $0.8\ m$.

Find five rational numbers between $0$ and $1$.

Show that: $\sqrt[3]{-125\times216}=\sqrt[3]{-125}\times\sqrt[3]{216}$

What will be the number of zeroes in the square of the following numbers?
(i) 60 $\quad$ (ii) 400

Factorise the following using the identity $a^2- b^2= (a + b)(a - b).$
$8a^3- 2a$

Factorize of the following algebraic expression:$(2x - 3y)(a + b) + (3x - 2y)(a + b)$

Using the formula $(a - b)^2= (a^2- 2ab + b^2),$ evaluate:
$(196)^2$

The sum of two numbers is $\frac{-1}3{}.$ If one of the numbers is $\frac{-12}{3},$ find the other.