quadratic equation: 2x-3x^2-4=0?
回答 (7)
3x² - 2x + 4 = 0
x = [ 2 ± â (4 - 48 ) ] / 6
x = [ 2 ± â (- 44 ) ] / 6
x = [ 2 ± â ( 44 i² ) ] / 6
x = [ 2 ± 2â(11) i ] / 6
x = [ 1 ± â(11) i ] / 3
the ecuation has no real solution
2x - 3x^2 - 4 = 0
3x^2 - 2x + 4 = 0
ac = 3(4) = 12
There are no factors of +12 that add to -2; use quadratic formula
x = [-b +/- sqrt(b^2 - 4ac)]/2a
x = [2 +/- sqrt(4 - 48)]/6
simplify from here
x1 = (1/3) + sqrt (-11) /3
x2 = (1/3) - sqrt (-11) /3
2x - 3x^2 - 4 = 0
-3x^2 + 2x - 4 = 0
x = [-b 屉(b^2 - 4ac)]/2a
a = -3
b = 2
c = -4
x = [-2 屉(4 - 48)]/-6
x = [-2 屉-44]/-6 (imaginary number)
(no real roots)
r u kiddin?
3x2-2x+4=0
using quadratic formula:
2+-sqrt (4-44)
as the b^2 -4ac is -ve the eqn has no real roots!
OR u have posted the wrong eqn!
收錄日期: 2021-05-01 10:40:25
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