Question

Escreva as equações na forma geral e resolva
A) 13-2x-15x²=0

Answer 1

13−2x−15x2=0−15x2−2x+13=0Δ=(−2)2−4.(−15).13=4+780=784x=2.(−15)2±784​​=−302±28​x1​=30−26​=−1513​x2​=−1​