
a^2+b^2=1,a-b=1/2,求a^2·b^2及(a+b)^2的值
1个回答
展开全部
a-b=1/2
(a-b)²=1/4
a²+b²-2ab=1/4
1-2ab=1/4
2ab=3/4
ab=3/8
a^2·b^2
=(ab)²
=9/64
(a+b)^2
=a²+b²+2ab
=1+2×3/8
=1+3/4
=7/4
(a-b)²=1/4
a²+b²-2ab=1/4
1-2ab=1/4
2ab=3/4
ab=3/8
a^2·b^2
=(ab)²
=9/64
(a+b)^2
=a²+b²+2ab
=1+2×3/8
=1+3/4
=7/4
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询