Answer:
{10, -4}
Step-by-step explanation:
(x-3)^2 = 49
Take the square root of each side
sqrt((x-3)^2) = sqrt(49)
x-3 = ±7
Add 3 to each side
x-3+3 = 3±7
x = 3±7
x = 3+7 and x = 3-7
x = 10 x = -4
Can you post a picture with more explanation
I think the answer is D because you have to move the decimal three times anyway, then you only need to add seven more zeroes to make it correct (in my opinion).