Practice problem
For which values of ccc will the equation 2x2+4x+c=02x^2+4x+c=02x2+4x+c=0 have at least one real solution?
c≤16c \le 16c≤16
c≤4c \le 4c≤4
c≤2c \le 2c≤2
c≥−2c \ge -2c≥−2
c≥2c \ge 2c≥2
c≥4c \ge 4c≥4
c≥16c \ge 16c≥16
Type a concept, like “slope” or “photosynthesis”.