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

Polynomial that can be factored as (3x-4)(3x+4)

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?