Answer:
Step-by-step explanation:
False.
Multiplying two negatives gives a positive.
Answer:
4a^2-6b^2+12
Step-by-step explanation:
(a^2 - 2b^2 + 3) - (4b^2 - 5) + (3a^2 + 4)
distribute the negative sign to each term in the 2nd expression
a^2-2b^2+3-4b^2+5+3a^2+4
combine like terms
4a^2-6b^2+12
USE M A T H W A Y trust me
Answer:
Step-by-step explanation:
a=0 if both x and y are each =0
for all other real values a>0
