Which expression is equivalent to this polynomial expression?
(2x^5 + 3y^4)(-4x^2 + 9y^4)

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

Use the distributive law to multiply. 3(4x + 5y + 6)

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?