4b2 - 5b + 16 = (2b - 4)2 + _
(_-_)(_+3)=_-36b²
4b2 - 5b + 16 = (2b-4)2 + 4b2-9b - 24
(3 - 6b) (6b+3) = 9 - 36b2
(2b - 4)²=4b²-16b+16
4b2 - 5b + 16 = (2b - 4)2 + 9b
(a-b)(a+b)=a²-b²
(_-_)(3+_)=_-36b²
(3-6b)(3+6b)=9-36b²
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4b2 - 5b + 16 = (2b-4)2 + 4b2-9b - 24
(3 - 6b) (6b+3) = 9 - 36b2
4b2 - 5b + 16 = (2b - 4)2 + _
(2b - 4)²=4b²-16b+16
4b2 - 5b + 16 = (2b - 4)2 + 9b
(_-_)(_+3)=_-36b²
(a-b)(a+b)=a²-b²
(_-_)(3+_)=_-36b²
(3-6b)(3+6b)=9-36b²