Question

3x(×+2)=6 me ajudemm

Answer 1

Resposta:

Explicação passo-a-passo: 3^√x

3x (x+2) = 6

3x • x^2 + 6 + 2x = 6

Junta oq é igual, nesse caso 3x e 2x

5x•x^2 = 6-6

5x • x • x = 0

5x^3 = 0

X^ 3 = 0

3^√x

Answer 2

Resposta:

Explicação passo-a-passo:

3x(x+2)=6

3x²+6x=6

3x²+6x-6=0   ÷(3)

x²+2x-2=0

$Aplicando~a~f\'{o}rmula~de~Bhaskara~para~x^{2}+2x-2=0~~\\e~comparando~com~(a)x^{2}+(b)x+(c)=0,~temos~a=1{;}~b=2~e~c=-2\\\\\Delta=(b)^{2}-4(a)(c)=(2)^{2}-4(1)(-2)=4-(-8)=12\\\\\sqrt{\Delta}=\sqrt{12}=\sqrt{4.3}=\sqrt{4}.\sqrt{3}=2\sqrt{3}\\\\x^{'}=\frac{-(b)-\sqrt{\Delta}}{2(a)}=\frac{-(2)-2\sqrt{3}}{2(1)}=\frac{-2-2\sqrt{3}}{2}=-1-2\sqrt{3}\\\\x^{''}=\frac{-(b)+\sqrt{\Delta}}{2(a)}=\frac{-(2)+2\sqrt{3}}{2(1)}=\frac{-2+2\sqrt{3}}{2}=-1+2\sqrt{3}$