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⇨ =(4y)²-4(3y)(4)=0
⇨ =16y²-48y=0
-------------------------: 16
⇨ y²-3y=0
⇨ y(y-3)=0
jadi
⇨ y=0. y=3
⇨ y=3
masukin
⇨ 3(3)x²+4(3)x+4=0
⇨ 9x²+12+4=0
⇨ 1/9 (9x+6)(9x+6)
⇨ x=6/9. x=6/9
akarnya kembar kan
maaf klo kliru.