Simplify: (4x2 + 8xy + 2y2) − (−9x2 − 4xy − 7y2)
5x2 + 4xy − 5y2
−5x2 − 4xy + 9y2
13x2 + 12xy + 9y2
13x2 − 12xy + 5y2

If x=-3 is the only x-intercept of the graph of a quadratic equation, which statement best discribes the discriminant of the equation?

Find the equation of a line whose slope is 2/5 and y- intercept is 2.write your answer in the form 1) ax+by+c=02) x/a+y/b=1

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.