1. -1
2. -2
3. -12
4. 7
5. -4
By Pythagoras Theorem,
the length of the other leg= (63^2-52^2)^1/2
hope this helps :)
Well Those are variables and it is using the Distributive property to solve. For example P(a+b) simplify P*a + P*b.
-3x^2 +10x
All you have to do is combine like terms!