How do I get this app free so I can actually find answers

Select the correct answer from each drop-down menu. the length of a rectangle is 5 inches more than its width. the area of the rectangle is 50 square inches. the quadratic equation that represents this situation is the length of the rectangle is inches.

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)