Asit Das Gupta and Alok Kumar Solutions for Exercise 3: Revision Exercise

If $x=3, y=1$ and $z=-4$, find the value of $x^3+y^3+z^3-3xyz$.

If $x=3, y=1$ and $z=-4$,  find the value of $4x^2+y^2+z^2-4xy-2yz+4zx$.

If $x=3, y=1$ and $z=-4$, find the value of $x^2+4y^2+\frac{z^2}{4}-4xy+2yz-xz$.

If $x\mathit{=}\mathit{1}$, find the values of the polynomial $3x^2-7x+9$.

If  $3x-4=2x+7$, then $x=$

Solve the following equations.

$10-11y=15-6y$

Solve the following equations.

$\frac{5x-1}{3}=8$

Solve the following equation. 

$(12x-9)-(5x-1)=(7x-5)-(4x-9)$