Answer
If $x=2$ the value of the expression is $10$.
If $x=1$ the value of the expression is $0$.
Work Step by Step
The given expression is
$=2x^3-3x^2+5x-4$
Substitute $x=2$.
$=2(2)^3-3(2)^2+5(2)-4$
Use $2^3=8$ and $2^2=4$.
$=2\cdot 8-3\cdot 4+5\cdot 2-4$
Simplify.
$=16-12+10-4$
$=26-16$
$=10$.
Substitute $x=1$.
$=2(1)^3-3(1)^2+5(1)-4$
Use $1^3=1$ and $1^2=1$.
$=2\cdot 1-3\cdot 1+5\cdot 1-4$
Simplify.
$=2-3+5-4$
$=7-7$
$=0$.
