Question

quero o calculo por bascara desta conta 
12x² - 14x -17 = 0

Answer 1

$12 x^{2} -14x-17=0= \Delta= b^{2} -4.a.c= \Delta= -14^{2} -4.12.(-17)= \Delta=196+816=1012  x^{1} =-(-14)-+ \sqrt{1012}/2.12=14 \sqrt{1012} /24 x^{2} =-(-14)-+ \sqrt{1012} /2.12=14 \sqrt{1012} /24$