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2. m² - 25 = 0 ----> a = 1 ; b = 0 ; c = - 25
3. x² - 2x = 15
x² 2x - 15 = 0 ------> a = 1 ; b = -2 c = - 15
4. 2y² = 3y - 9
2y² - 3y + 9 = 0 -------> a = 2 ; b = - 3 ; c = 9
5. p² + 8p = 0 --------> a = 1 ; b = 8 ; c = 0
6. -3s² + 5 = -7
- 3²s + 5 + 7 = 0
- 3s² + 12 = 0 ------> a = -3 ; b = 0 ; c = 12
keterangan : a = koefisien variable berpangkat 2
b = koefisien variable berpangkat 1
c = konstanta