(1)解方程;3x(x-1)=2(1-x) (2)计算 (a^2-b^2)+(a+b)+(a^2-2ab+b^2)+(a-b)
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![(1)解方程;3x(x-1)=2(1-x) (2)计算 (a^2-b^2)+(a+b)+(a^2-2ab+b^2)+(a-b)](/uploads/image/z/12651467-59-7.jpg?t=%281%29%E8%A7%A3%E6%96%B9%E7%A8%8B%3B3x%28x-1%29%EF%BC%9D2%281-x%29+%282%29%E8%AE%A1%E7%AE%97+%EF%BC%88a%5E2-b%5E2%EF%BC%89%2B%28a%2Bb%29%2B%28a%5E2-2ab%2Bb%5E2%29%2B%28a-b%EF%BC%89)
(1)解方程;3x(x-1)=2(1-x) (2)计算 (a^2-b^2)+(a+b)+(a^2-2ab+b^2)+(a-b)
(1)解方程;3x(x-1)=2(1-x) (2)计算 (a^2-b^2)+(a+b)+(a^2-2ab+b^2)+(a-b)
(1)解方程;3x(x-1)=2(1-x) (2)计算 (a^2-b^2)+(a+b)+(a^2-2ab+b^2)+(a-b)
(1)解方程:
3x(x-1)=2(1-x)
3x(x-1)=-2(x-1)
3x(x-1)+2(x-1)=0
(x-1)(3x+2)=0
x1=1 x2=-2/3
(2)计算:
(a^2-b^2)+(a+b)+(a^2-2ab+b^2)+(a-b)
=(a^2-b^2)+(a-b)^2+2a
=(a-b)(a+b+a-b)+2a
=2a^2-2ab-2a
3x(x-1)=2(1-x) x=1
(a^2-b^2)+(a+b)+(a^2-2ab+b^2)+(a-b)=2a(a-b)