Too much work!!!!!!!!!!!!
Answer:
I think its D
Step-by-step explanation:
Step-by-step explanation:
x²-y²=12
(x-y)(x+y)=12
but x-y=4
4(x+y)=12
x+y=12/4
x+y=3
lets make x the subject of the formula
x=3-y
since x-y=4
(3-y)-y=4
3-y-y=4
-2y=1
y=-1/2
then x=3-y
x=3-(-1/2)
x=(6--1)/2
x=7/2
therefore; x²+2xy+y
=(7/2)²+2×7/2×-1/2+(-1/2)
=49/4-7/2-1/2
=(49-14-2)/4
=33/4
=8.25
=8
Answer:
Step-by-step explanation:
Answer:
A. 0
B. 5xy^3
C. 9x^2y
(All three of them are the right answers.)
Explanation:
I just got that question right on Edge.
<em>Hope it helps!</em>
