Answer:
B
Step-by-step explanation:
Answer:
jygeidycge9d7cge9
Step-by-step explanation:
because im albert einstein
Step-by-step explanation:
Simplify :
x4−6x3+2x−7+7x3−x+5x2+2−x4
x4−6x3+2x−7+7x3−x+5x2+2−x4
Rearranging and collecting the like terms, we get:
=(x4−x4)+(−6x3+7x3)+5x2+(2x−x)+(−7+2)
=(1−1)x4+(−6+7)x3+5x2+(2−1)x+(−7+2)
=(1)x3+5x2+(1)x−7+2
=x3+5x2+x−5
(38.3 - -1.2) = 39.5
Anytime you have two minuses beside each other, you add.
If you have a plus sign in the middle, but one of the numbers is negative you subtract.
Hope that makes sense ! (: