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x = 2, maka
2² + 5(2) + c = 0
⇒ 4 + 10 + c = 0
⇒ 14 + c = 0
⇒ c = -14
Terimakasih semoga membantu
xkuadrat+5x+c = 0
2kuadrat+5(2)+c = 0
4+10+c = 0
14+c = 0
c = 0-14
c = -14