Consider the graph of the quadratic function y = 2 (x + 3) 2 - 3 with two real zeros. What number can be added to the right side of the equation to change it to a function with one real zero?.

We have a quadratic equation that has two zeros. By adding 3, we eliminate the shifting down of - 3, y=2 (x+3) ^2-3 + (3) = 2 (x+3) ^2. Now the equation will have one zero:

y=2 (xt3) ^2

0=2 (xt3) ^2

0/2 = (2 (xt3) ^2) / 2

0 = (x+3) ^2

0 = (x+3) (x+3)

0=x+3

0-3=x+3-3

x=-3