hennadoshi hennadoshi

02-05-2017
Mathematics

contestada

pls help me answer this quickly!!

pls help me answer this quickly class=

Respuesta :

02-05-2017

This is basically proving the quadratic formula. B is the correct answer.

Here is what I did after step 5:

x²+bx/a+b²/4a² = b²/4a² - 4ac/4a²

(x + b/2a )² = b²-4ac/4a² (The answer)

√(x+b/2a)² = + or - √b²-4ac/4a²

x+b/2a = + or - √b²-4ac/2a

x = -b/2a + or - √b²-4ac/2a

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