Question

Find the value of given polynomial for x=2 and y=3
1.$x^2-x.y+y^3$
2.$x^3+x.y$

Answer 1

$1.$ $f(x,y)=x^2-xy+y^3$

$f(x=2,y=3)={\left(2\right)}^2-2.3+3^3$

$=4+27-6$

$=31-6$

$=25$

$2.$ $f(x,y)=x^3+xy$

$f(x=2,y=3)=2^3+2.3=8+6=14$