Prakash Tiwari and Ishita Joshi Solutions for Chapter: Algebraic Expressions, Exercise 4: Let's Practice

Simplify $2\left(l+m+n\right)-lmn$ and find the value, if $l=-1, m=1$ and $n=3$

Simplify $l^3+m^3+n^3-1$ and find the value, if $l=-1, m=1$ and $n=3$

Simplify $lm+mn+nl+2\left(l+m+n\right)$ and find the value, if $l=-1, m=1$ and $n=3$

Simplify $l^4-m^4$ and find the value, if $l=-1, m=1$ and $n=3$

Simplify $2l^2+3m^3-n^4+l+m-2n$ and find the value, if $l=-1, m=1$ and $n=3$

Simplify ${\left(l+m\right)}^2+{\left(m+n\right)}^2+{\left(n+l\right)}^2$ and find the value, if $l=-1, m=1$ and $n=3$

Simplify $\left(l+1\right)\left(m+1\right)\left(n+1\right)-10$ and find the value, if $l=-1, m=1$ and $n=3$

Simplify $lm+ln-2mn$ and find the value, if $l=-1, m=1$ and $n=3$