Question

X2-6x+8=15 saben su resultado

Answer 1

8x+8=15 8x=15-8 X=7/8

Answer 2

${x}^{2} - 6x + 8 = 15 \\ {x}^{2} - 6x = 15 - 8 \\ {x}^{2} - 6x = 7 \\ {x}^{2} - 6x - 7 = 0 \\ x = 7 \\ x = - 1$
Y listo x puede ser-1 o 7