已知实数a,b分别满足a^2-6a 4=0,b^2-6b 4=0,且a不等于b

已知实数a,b分别满足a^2-6a 4=0,b^2-6b 4=0,且a不等于b
已知实数a,b分别满足a^2-6a 4=0,b^2-6b 4=0,且a不等于b

已知实数a,b分别满足a^2-6a 4=0,b^2-6b 4=0,且a不等于b
由题可知
a、b是方程x²-6x+4=0的两根,
(x^2-6x+9)=5
(x+3)^2=5
a=√ 5-3
b=-√ 5-3