Answer:
D
Step-by-step explanation:
=
= 
and
=
=
= 
Hence expression D is equivalent
In order to add or subtract fractions, they must have a common denominator. I hope I answered your question.
Remember

so since they're all being multiplied, just add the exponents and see which one doesn't add to 2
A. -3+5-2+2=2+0=2, yep
B. -9+0+2+5=-9+7=-2, nope
C. -3-1+1+5=-4+6=2, yep
D. -5+9-2+0=4-2=2, yep
answer is B
Combine like terms. -9x^4+6x^3+x^2+6x
Answer:
1.55
Step-by-step explanation: