1/2y²+3/4y=5, ubalah sehingga tidak lagi memuat pecahan​

Penjelasan:

1/2 y² + 3/4 y = 5……x4

2y² + 3y = 20

2y² + 3y – 20 = 0

(2y -5)(y + 4) = 0

2y – 5 = 0

2y = 5

y = 5/2

y + 4 = 0

y = -4

Jawaban:

Penjelasan:

1/2y² + 3/4y = 5

1/2y² + 3(y/2)/2y² = 5

1 + 3(y/2) = 5(2y²)

1 + 3y/2 = 10y²   kedua ruas dikali 2

2 + 6y = 20y²

20y² – 6y -2 = 0

2(10y² – 3y -1) = 0

2(2y-1)(5y+1) = 0