Answer:
D one real solution
Step-by-step explanation:
x^2 - 8x + 16 = 0
This is in the form
ax^2 +bx + c = 0
so we can use the discriminant to determine the number of solutions
b^2 -4ac
(-8)^2 -4(1)(16)
64 - 64
0
Since the discriminant is zero, there is one real solution.
Yes because you are basically taking what you are giving in the first place
If your looking for solutions their will be zero. Since 15+23+7=15+7 is false, there is no solution.
