Question

Tolong di kumpul besok no14

Answer 1

2x² + 4x - 10 = 0
x1 + x2 = - 4/2 = -2
x1 x2 = -10/2 = -5
persamaan baru
1/x1 + 1/x2 = (x1 + x2) / x1 x2 = -2 / -5 = 2/5
1/x1 . 1/x2 = 1/ x1 x2 = 1/ -5 = - 1/5
x² - 2/5 x - 1/5 = 0  ( dikali 10)
10x² - 4x - 2 = 0  (B)