The expression 3x^3-5x^2+3x-1 has terms and a constant of

8, 1

8, -1

4, 1

4, -1

combine like terms in the following expression: y+2x^2+5x^2

y+7x

10x^4+y

7x^5

7x^2+y

subtract the second expression from the first. (3x^2+2x--3x+4)

2x^2+5x-5

4x^2+5x-5

4x^2-x-5

2x^2- x-5

evaluate the expression4y^2x÷7+2y for x=7 and y+2 .

2

4 2/7

5

18

evaluate the expression (y^2-4x)÷7-4 for x and y=5 .

-1

3

7

-7