Factor the trinomial comoletley x2+5x-84

The hypotenuse of an isosceles right triangle is $14\sqrt 2$. what is the area of the triangle?

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)