NCERT Solutions for Chapter: Algebraic Expressions, Exercise 1: Exercise

In $\mathrm{A}=2\mathrm{h}\left(\mathrm{l}+\mathrm{b}\right)$, if $\mathrm{A}=54 {\mathrm{m}}^2, \mathrm{l}=5 \mathrm{m}, \mathrm{b}=4 \mathrm{m}$. Then, find $\mathrm{h}$.

If $\mathrm{S}=\left(\mathrm{n}-2\right)180° \mathrm{and} \mathrm{S}=540°,$ then find $\mathrm{n}$

In $\mathrm{A}={\mathrm{s}}^2-{\left(\mathrm{s}-2\mathrm{w}\right)}^2,$ if $\mathrm{w}=1 \mathrm{m}$ and $\mathrm{s}=6 \mathrm{m}$, then find $\mathrm{A}$ (in ${\mathrm{m}}^2$).

If $\mathrm{X}=2{\mathrm{x}}^2, \mathrm{Y}=4{\mathrm{x}}^6-6{\mathrm{x}}^4$, then find the value of $\frac{\mathrm{Y}}{\mathrm{X}}$ when $\mathrm{x}=1$.

The algebraic expression for the statement 'twice the square of a number $x$ subtracted from seven times the sum of the numbers $y$ and $2$' is:

What is the coefficient of $x$ in the expression $1+x+xz ?$

In the formula $\angle \mathrm{A}+\angle \mathrm{B}+\angle \mathrm{C}=180°$, if $\angle \mathrm{A}=90°$ and $\angle \mathrm{B}=55°$, then $\angle \mathrm{C}=$_____.

Write the numerical coefficient of given term: $-7abc$