Which equation can be used to solve for x in the triangle below?
✓x
4.0 cm
41°
P
4.7 cm
R
x2-4.72 +4.02 +2(4.7)(4.0) cos 41°
X=4.7+4.0+ 2(4.7)(4.0) cos410
O X2-4.72 +4.02-2(4.7)(4.0) cos410
X = 4.7+4.0-2(4.7)(4.0)cos410

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

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