1.what is the sum of 9x ₋6 and -5x + 7?
a.14x + 1
b.-4x - 1
c.4x + 1
d.4x + 13
2.what is the difference of 9x -6 and -5x + 7
a.14x - 13
b.4x + 1
c.-4x + 13
d. -4x - 13
3.what is the degree of the polynomial x^{5} -2x^{4} y^{2} + xy^{3}
a.7
b.6
c.5
d.4
4. what must be subtracted from 2x -3y + 2 to get -4x -2y + 1
a.6x - y + 1
b.2x - y + 1
c.-6x - y - 1
d.-2x + y + 1
5.what is the value of 4 a^{2}b^{3} c when a = -2, b=1, and c =\frac{1}{4} ?
a.-16
b.-4
c.16
d.4