Jawapan

  • Pengguna Brainly
2016-01-10T12:20:16+08:00
-2(5-3y)^2
= - 2 ( 5-3y ) ( 5-3y )
= - 2 ( 25 - 15y - 15y + 9y^2 )
= - 50 + 30y + 30y - 18y^2
18y^2 -30y - 30y + 50 = 0
18y^2 - 60y + 50 = 0
( 3x - 5 ) = 0
x = 5 / 3
2 4 2