2007-05-21 03:29:55 · 4 answers · asked by Dave 4 in Science & Mathematics ➔ Mathematics
4x² + 2x - 3 = 0
x² + x/2 - 3/4=0
(x + 1/4)² - 1/16 - 3/4 = 0
(x + 1/4)² - 1/16 - 12/16 = 0
(x + 1/4)² - 13/16 = 0
(x + 1/4)² = 13/16
x + 1/4 = ±√(13/16)
x = -1/4 ±√(13/16)
x = -1/4 ±√(13)/4
or
x = (-1 ±√13) / 4
2007-05-21 03:46:33 · answer #1 · answered by peateargryfin 5 · 0⤊ 0⤋
4x²+2x-3=0
+3=3
4x²+2x=3
6x²=3
2007-05-21 03:41:24 · answer #2 · answered by z on the track 1 · 0⤊ 1⤋
x² + (1/2).x - 3/4 = 0
(x² + (1/2).x + 1/4) - 1/4 - 3/4 = 0
(x + 1/2)² = 1
x + 1/2 = ± 1
x = - 3/2 , x = 1/2
2007-05-21 07:09:47 · answer #3 · answered by Como 7 · 0⤊ 1⤋
4(x+a)^2 +b
4x^2+8a+4a^2 +b
8a = 2 , so a = 0.25
4*0.25^2 + b = -3 so b = -3.25
4(x+0.25)^2 -3.25
hope that helps
2007-05-21 03:41:05 · answer #4 · answered by Fred L 1 · 0⤊ 1⤋