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Akar pertama = -5
substitusi.
2 . (-5)² + (-5m) + 15 = 0
50 - 5m + 15 = 0
65 - 5m = 0
65 = 5m
m = 13
Bertemu , maka PK nya 2x² + 13x + 15
Faktorkan ,
2x² + 10x + 3x + 15
= 2x(x + 5) + 3(x + 5)
(2x + 3)(x + 5) = 0
2x + 3 = 0
2x = -3
x = -3/2
x + 5 = 0
x = -5
Akar yang lain ialah -3/2
smgmbntu:))