Find the domain of function p(x)=−21−16x−3x2. Write your answer using interval notation in the box below. Enter your values as integers or reduced fractions.
Enter your answer using interval notation. Example: [2,5) Use U for union to combine intervals. Example: (-oo,2] U [4,oo) Enter each value as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4) Enter DNE for an empty set. Use oo to enter Infinity.