21 the number of real solutions each quadratic equation has. answer with either no, one, or two. 1.) y = 12x^2 - 9x + 4 has _ real solution(s) 2.) 10x + y = -x^2 + 2 has _  real solution(s) 3.) 4y - 7 = 5x^2 - x + 2 + 3y has _  real solution(s)4.) y = (-x + 4)^2 has _  real solution(s)