9y pangkat 2 + 42y +49
Matematika
Archevia3841
Pertanyaan
9y pangkat 2 + 42y +49
2 Jawaban
-
1. Jawaban rahmiyanti11
9y²+42y+49
(3y+7)²
(3y+7)(3y+7) -
2. Jawaban lintangannisa21
9y²+42y+49 = 0
(9y+21)(9y+21)
-------------------- = 0
9
(3y+7)(9y+21)
------------------- = 0
3
(3y+7)(3y+7) = 0
3y +7 = 0
3y = -7
y = -7/3