Question 90696This question is from textbook Beginning Al
: Solve by completing the square: 4x^2 + 2x - 3 = 0
4x^2 + 2x = 3
x^2 + 2/4x = 3/4
Square one-half of the of the x-coefficient and then add it to both sides
1/2 of 2/4 = 1/4^2 = 1/16
x^2 + 2/4x + 1/16 = 3/4 + 1/16
(x-1/4)^2 = 13/16
x - 1/4 = +/- radical 13 over radical 16
x - 1/4 = +/- radical 13 over 4
x = 1/4 +/- radical 13 over 4
x = 1 +/- radical 13 over 4
Again, any feedback would be appreicated!
This question is from textbook Beginning Al
Answer by vertciel(183)   (Show Source):
You can put this solution on YOUR website! Hello there,
I couldn't understand your answer but if you got the following two x values, then your answer is right.
x ≈ 0.6514
x ≈ -1.1514
I solved the equation with my graphing calculator so I don't have any steps. If you didn't get these roots and you want more help, please write back!
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