September 2018 1 36 Report
Ada yang bisa bantu Matematika kelas X ? *Persamaan Kuadrat*
1. x^2+7x+10 = 0
2. 2x^2-18 = 0
3. x^2 -x-30 = 0
4. x^2+6x = 0
5. 2x^2 -x-3 = 0
ket: ^ = pangkat ..
caranya seperti ini:
ex: x^2+3x-28 = 0 ,,
(x+7) (x-4) = 0 ,,
x+7 = 0 atau x-4 = 0 ..
x= -7 atau x=4 .
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