It is 8
-3 squared by 2
-2 squared is +4.
You could just pull out the half: it will be (1/2) cos squared x.
Yes
The exponent "2" as in a number squared, e.g. cm2 or in2
No, three squared is nine. 3(squared sign) =3x3 =9
They are terms of an expression because without an equality sign it is not an equation.
a^2b^2c^2 ^2 is squared
The symbol for squared is ², for example, 2 squared would be 2².
You don't. You put a cubed sign for volume, which surface area is not. Surface area gets a squared sign. The reason for THAT is to show it's a 2-dimensional measurement.
It is 8
-3 squared by 2
-2 squared is +4.
The result of a number multiplied by itself
You could just pull out the half: it will be (1/2) cos squared x.
When you subtract 7x^2 from 5x^2, you get -2x^2.