Question

If $z=10$, find the value of $z^2-3(z-10)$.

Answer 1

Evaluate the given expression:

The given expression is $z^2-3(z-10)$ and $z=10$

Upon substituting this value in the given expression we get,

$z^2-3(z-10)={10}^2-3\left(10-10\right)$

$=100-3\left(0\right)$

$=100$

Hence the value of the given expression for $z=10$ is $100$.