4 more questions left on my test im literally wasting my gb on screenshots of my test lol

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)