Question

If four is subtracted from $3$ times the square of a number to get $6$. Write this in the form of a linear equation.

Answer 1

Let the number be $x.$

Therefore the square of a number becomes $x\times x=x^2=y$

Therefore the linear equation is $(3\times x^2)-4=3y-4=6$

So this becomes a linear equation in one variable.