Answers

2016-07-07T21:08:30+08:00
4x squared -8x-16=0 
you transpose 16 to the other side and it will become negative








































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2016-07-07T21:19:47+08:00
4x^2-8x=16 4x^2/4 - 8x/4 = 16/4 x^2 - 2x = 4 x^2 - 2x + 1 = 4 + 1 x^2 - 2x + 1 = 5 (x-1)^2 = 5 √(x-1)^2 = √5 x-1 = √5 x= 1 ± 1√5 x = 1 + 1 √5 ; x = 1 - 1 √5 x = 2 √5 x = √5
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Waa
Ito na lang ibigay ko na yong answer x= 2 √5 at x = √5