I believe the answer is B.
Answer:
-7
Step-by-step explanation:
5+-7
The answer is that y is equal to -3 and x is equal to 7
2x-y=17
-2(x-y)=10 )
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2x-y=17
-2x+2y=-20
----------------
y=-3
x-y=10
x-(-3)=10
x+3=10
-3 -3
----------
x=7
D. Because the standard form goes from largest exponent to smallest.
D is the only that does that.
Ex.
x^4 + x^3 + x^2 + x + 1
