Alka Tuli and Rajesh Hassija Solutions for Chapter: Algebraic Expressions, Exercise 2: Exercise

Write an algebraic expression for the following statement.
Subtract the product of $2$ and $\mathrm{x}$ from $7$. $$

Write an algebraic expression for the following statement.

$6$ more than the product of $3$and $\mathrm{y}.$ $$

Write an algebraic expression for the following statement.
Difference of $\mathrm{a}$and $\mathrm{b}$added to $6$

Write an algebraic expression for the following statement.
$7$ times $\mathrm{m}$ is added to $5$ times $\mathrm{n}$.

Arrange the terms of the following algebraic expression in the descending order of their powers.
$3x^2+1-4x^4+4x^3$

Arrange the terms of the following algebraic expression in the descending order of their powers.
$5{\mathrm{p}}^3+6{\mathrm{p}}^7-3{\mathrm{p}}^2-1$

Arrange the terms of the following algebraic expression in the descending order of their powers.

$-2{\mathrm{x}}^2{\mathrm{y}}^2+3{\mathrm{x}}^3{\mathrm{y}}^2+5\mathrm{xy}-4{\mathrm{x}}^3{\mathrm{y}}^3$

Arrange the terms of the following algebraic expressions in the descending order of their powers.
$-3{\mathrm{a}}^2\mathrm{b}+5\mathrm{ab}+5{\mathrm{a}}^2{\mathrm{b}}^2-4{\mathrm{ab}}^3+6{\mathrm{a}}^7{\mathrm{b}}^2$