How do you solve the equation: #4x^2+13x-75=0#?
I use the new Transforming Method (Google, Yahoo Search)
Factor pairs of ac = -300 ->.... (-10, 30)(-12, 25). This sum is 13 = b. Then, the 2 real roots of (2) are: y1 = 12 and y2 = -25. Back to original equation (1), the 2 real roots are:
This method is fast, systematic. There are no factoring by grouping, and no solving binomials.