X²-5X-8=0 X²-14X+49=0

Question

X²-5X-8=0
X²-14X+49=0

Answer 1

Х²-5х-8=0
D=5²-4×1×(-8)=25+32=57
x1,2=(5±√57)/2

x²-14x+49=0
D=14²-4×1×49=0
x=(14±0)/2=7
Ответ: 7