wtt32

So firstly you just have to plug in the values as given into a calculator.
(3)^3 - 2(5^2) - 3(3)^3 + (-3)^4 .
It is also very important that when you plug in your values they must be inside parenthesis, followed by calculating the powers first, then the multiplication, then lastly the subtraction.

XSadness

Hello.

1. -23

x3−2y2−3x3+z4 Arranging similar monomials

=x3−3x3−2y2+z4

=−2x3−2y2+z4

=−2(3)3−2(5)2+(−3)4

=−2×27−2×25+81

=−54−50+81

=−104+81

=−23

Have a nice day