Line up the decimal points and multiply the rest like you would normally do it but drop down the decimal at the end
(x + 4) (x - 3)
a = 4
b = -3
a^2 + b^2 = ...
= 4^2 + (-3)^2
= 16 + 9
= 25
Answer:
Positive
Step-by-step explanation:
-465+465
= 465-465
=0
Zero is positive.
