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-1)-(x^2-3x+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