Question

I will give u 51 points.
but before tonight.

Answer 1

Answer:

1st answer : -34

3rd answer: -5

Step-by-step explanation:

1st: 5y -3x² + xy -(3x²-5y-2)

5y-3x²+xy-3x²+5y+2

5y+5y-3x²-3x²+xy+2

10y-6x²+xy+2

value of result:

10×(-1)-6×2²+2×-1+2

-10-6×4-2+2

-10-24-2+2

-10-24(-2 and 2 cut)

-34

3rd:

3(-1)²+5(-1)-2t=8

3×1-5-2t=8

3-5-2t=8

-2t=8-3+5

-2t=5+5

-2t=10

t= -10/2

t= -5

can you tell in 2nd question what do we have to simplify?