SubArea: Quadratic functionsLevel: CProject ID: 1003162309Accepted: 1Clonable: 0Easy: 0Find all the values of the real parameter p such that f(x)=px2−4px+4p−3 is a negative quadratic function for all x∈R.p∈(−∞;0)p=0p∈(0;∞)p∈(−2;2)