Question

1 escreva na foramareduzida as equacoes de 2 grau
a)x²-7=x+5
b)x²+11x=16x-6
c)x²-3x+5=8+x-x²
d)x.(x-6)+x²=(x-5).(x+2)
e)x.(x+5)=3.(x-2)
f)(x-10²)+x.(x+17)=104​

Answer 1

Resposta:

A) $x=4,\:x=-3$

B) $x=3,\:x=2$

C) $x=\frac{2+\sqrt{10}}{2},\:x=\frac{2-\sqrt{10}}{2}$

D) $x=\frac{3}{2}-i\frac{\sqrt{31}}{2},\:x=\frac{3}{2}+i\frac{\sqrt{31}}{2}$

E) $x=-1+\sqrt{5}i,\:x=-1-\sqrt{5}i$

F) $x=-9+\sqrt{285},\:x=-9-\sqrt{285}$