若a+b=10,ab=24,则a²+b²= (a-b)²=(1)、a²+b²= (2)、(a-b)²=
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![若a+b=10,ab=24,则a²+b²= (a-b)²=(1)、a²+b²= (2)、(a-b)²=](/uploads/image/z/2506028-68-8.jpg?t=%E8%8B%A5a%2Bb%3D10%2Cab%3D24%2C%E5%88%99a%26%23178%3B%2Bb%26%23178%3B%3D+%EF%BC%88a-b%EF%BC%89%26%23178%3B%3D%EF%BC%881%EF%BC%89%E3%80%81a%26%23178%3B%2Bb%26%23178%3B%3D+%EF%BC%882%EF%BC%89%E3%80%81%EF%BC%88a-b%EF%BC%89%26%23178%3B%3D)
若a+b=10,ab=24,则a²+b²= (a-b)²=(1)、a²+b²= (2)、(a-b)²=
若a+b=10,ab=24,则a²+b²= (a-b)²=
(1)、a²+b²=
(2)、(a-b)²=
若a+b=10,ab=24,则a²+b²= (a-b)²=(1)、a²+b²= (2)、(a-b)²=
a+b=10
两边平方
a²+2ab+b²=100
a²+b²
=100-2ab
=52
(a-b)²
=a²-2ab-b²
=52-48
=4
把分类改为数学,