express, in simplest a+bi form, the roots of the equation?

1 ⤊

x^2 + 5 =4x

2007-04-03 06:21:26 · 4 answers · asked by tiffanyjdias 1 in Science & Mathematics ➔ Mathematics

Use the quadratic formula...

x^2 - 4x + 5 = 0

x = [4 +- sqrt(16-20)]/2
= [4 +- sqrt(-4)]/2
= 2 +- i

So your roots are 2+i and 2-i

2007-04-03 06:24:09 · answer #1 · answered by tedfischer17 3 · 1⤊ 0⤋

x^2 + 5 =4x
x^2 -4x +5 = 0
x= [4 +/- sqrt(16-4(1)(5)]/(2*1)
x= [4+/-sqrt(-4)]/2
x= [2 +/- 2i]/2
x= 1+i and 1-i

2007-04-03 13:30:40 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋

x^2-4x+5=0

(4+2i)/2 and (4-2i)/2

x = 2+i or 2-i

2007-04-03 13:26:29 · answer #3 · answered by SS4 7 · 0⤊ 0⤋

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( . Y . )

2007-04-03 13:28:51 · answer #4 · answered by ivanna 1 · 0⤊ 0⤋