Question

已知x的2次方加y的2次方,再减2x,然后加上1,结果等于零.求x的y次方的值

Answer 1

x²+y²-2x+1=0

(x²-2x+1)+y²=0

(x-1)²+y²=0

x-1=0 且 y=0

x=1,y=0

x的y次方=1º=1