misal persamaan 2x²-3×-4=0 mempunyai akar akar a dan b. nilai ⁴/a + ⁴/b =

jawab
2x² - 3x - 4= 0
a+ b = -(-3)/2 =  3/2
a  b = -4/2 = -2

4/a+ 4/b = 4 (1/a+ 1/b)
= 4( a+b)/(ab)
= 4(3/2) / (-2)
=  6/-2
= - 3