NCERT Solutions for Chapter: Algebraic Expressions, Identities and Factorisation, Exercise 1: Exercise

Expand the following, using suitable identities.

$(\mathrm{x}+3)(\mathrm{x}+7)$

Expand the following, using suitable identities.

$(2\mathrm{x}+9)(2\mathrm{x}-7)$

Expand the following, using suitable identities.

$\left(\frac{4x}{5}+\frac{y}{4}\right)\left(\frac{4x}{5}+\frac{3y}{4}\right)$

Expand the following, using suitable identities.

$\left(\frac{2\mathrm{a}}{3}+\frac{\mathrm{b}}{3}\right)\left(\frac{2\mathrm{a}}{3}-\frac{\mathrm{b}}{3}\right)$

Expand the following, using suitable identities.

$\left({\mathrm{x}}^2+{\mathrm{y}}^2\right)\left({\mathrm{x}}^2-{\mathrm{y}}^2\right)$

Expand the following, using suitable identities.

${\left(a^2+b^2\right)}^2$

Expand the following, using suitable identities.

$(7x+5{)}^2$

Expand the following, using suitable identities.

$(0.9\mathrm{p}-0.5\mathrm{q}{)}^2$