Solve by taking the square root of both sides.
4(x-4)²-180 = 0
a. x=4-9√√5 or 4+9√√5
b. x-4-3-√√5 or -4+3√√5
c. x=-4-3-√√5 or 4+ 3√√5
d. x-4-3√√5 or 4 + 3√√√5