Answer:
(-8x+7y)(−8x+7y)+(2x-2y)(2x−2y)= simplified - 68x^2+53y^2−120xy
I hope this helps ! <3
Step-by-step explanation:
A is 12.71
B is 36.93
If this is wrong I’m sorry, I really tried
Answer:
x=2, y=2
Step-by-step explanation:
x+y=4
3x+y=8
3x-x=4
2x=4
x=4/2
=2
2+y=4
y=4-2
=2
1. I suppose the ODE is supposed to be

Solving for
gives

which is undefined when
. The interval of validity depends on what your initial value is. In this case, it's
, so the largest interval on which a solution can exist is
.
2. Separating the variables gives

Integrate both sides. On the left, we have

where we substituted
- or
- and
- or
.

On the right, we have


So




I'll leave the solution in this form for now to make solving for
easier. Given that
, we get



and so our solution is
