Question

Помогите решить ,пожалуйста пример №7.34(а)

Answer 1

$ODZ \ x-3 neq 0 \ x neq 3 \ \ frac{x^2+3x}{2(x-3)}+ frac{x+12}{6}= frac{3x}{x-3} \ frac{3(x^2+3x)}{3*2(x-3)}+ frac{(x-3)(x+12)}{6(x-3)}= frac{6*3x}{6(x-3)} \ frac{3x^2+9x}{6(x-3)}+ frac{x^2+12x-3x-36}{6(x-3)}= frac{18x}{6(x-3)} \ frac{3x^2+9x}{6(x-3)}+ frac{x^2+9x-36}{6(x-3)}= frac{18x}{6(x-3)} \ 3x^2+9x+x^2+9x-36=18x \ 4x^2+18x-36=18x \ x^2-36=0 \ x^2=36 \ x= sqrt{36}$
x₁=6
x₂=-6