Jawaban:
3x² - 10x - 20 =0
Penjelasan dengan langkah-langkah:
3x² - 2x - 5=0
a=3 b=-2 c=-5
x1 + x2= -b/a = -2/3 = 5/3
x1.x2=c/a=-5/3
akar barunya :
m=2.x1
n=2.x2
m+n=2(x1+x2)
=2(5/3)
=10/3
m.n=2(x1)×2(x2)
=4(x1.x2)
=4(-5/3)
=-20/3
persamaan baru :
x² - (m+n)x + m.n = 0
x²- (10/3)x - 20/3 = 0
3x² - 10x -20 = 0
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Jawaban:
3x² - 10x - 20 =0
Penjelasan dengan langkah-langkah:
3x² - 2x - 5=0
a=3 b=-2 c=-5
x1 + x2= -b/a = -2/3 = 5/3
x1.x2=c/a=-5/3
akar barunya :
m=2.x1
n=2.x2
m+n=2(x1+x2)
=2(5/3)
=10/3
m.n=2(x1)×2(x2)
=4(x1.x2)
=4(-5/3)
=-20/3
persamaan baru :
x² - (m+n)x + m.n = 0
x²- (10/3)x - 20/3 = 0
3x² - 10x -20 = 0