# math,correction

posted by
**jas20**
.

add 5y-4 and 2y^2-8y

my answer is: 2y^2-3y-4

classify the following, if possible

7x^2+10xy+y^2

a)not classified

b)trinomial

c)monomial

d)binomial

My answer: trinomial

Write using positive exponents, and simplify if possible

(-3x)^-2

a)(1)/(6x^2)

b)(9)/(x^2)

c)(1)/(9x^2)

d) - (9)/(x^2)

My answer: d

all correct, except the last. The 3 is in the () that has an exponent.