Question

Ajutor vă rog la subpunctul e

Answer 1

$32=2^5;0,25= 2^{-2};128=2^7 \\ 5* \frac{x+6}{x-6}= -2+7* \frac{x+18}{x-2} \\ \frac{5x+30}{x-6}= \frac{-2x+4+7x+126}{x-2} \\ \frac{5x+30}{x-6}= \frac{5x+130}{x-2} \\ \frac{(5x+30)(x-2)-(5x+130)(x-6)}{(x-6)(x-2)} =0;x \neq 2;x \neq 6 \\ 5 x^{2} +20x-60-5 x^{2} -100x+780=0 \\ -80x=-720 \\ x=9$