QUADRATIC EQUATION, ax² +bx + c = 0, where a≠0
3x²+20x-7 = 11+20(2x+3)
3x² + 20x -7 = 11+ 40x + 60
3x² + 20x - 7 = 40x +71
3x² + 20x -7 - 71 = 0
3x² + 20x - 78 = 0
Solve the equation using quadratic formula. By finding its discriminant, this equation can not be factored.
a = 3; b = 20; c= -78
