Question

13×{223-[(x+2)×(x×3)+11]}-46=682​

Answer 1

Răspuns:

x₁=-15

x₂=10

Explicație pas cu pas:

13(223-x²-5x-17)-46=682

13(206-x²-5x)-46=682

2678-13x²-65x-46=682

2632-13x²-65x-682=0

x²+5x-150=0

(x+15)(x-10)=0

x+15=0 => x₁=-15

x-10=0 => x₂=10