(3a+3b-2)(3a+3b+1)=4 (3a+3b-2)(3a+3b+1)=4 求a+b的值 希望能有过程
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![(3a+3b-2)(3a+3b+1)=4 (3a+3b-2)(3a+3b+1)=4 求a+b的值 希望能有过程](/uploads/image/z/11548009-1-9.jpg?t=%283a%2B3b-2%29%283a%2B3b%2B1%29%3D4+%283a%2B3b-2%29%283a%2B3b%2B1%29%3D4+%E6%B1%82a%2Bb%E7%9A%84%E5%80%BC+%E5%B8%8C%E6%9C%9B%E8%83%BD%E6%9C%89%E8%BF%87%E7%A8%8B)
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(3a+3b-2)(3a+3b+1)=4 (3a+3b-2)(3a+3b+1)=4 求a+b的值 希望能有过程
(3a+3b-2)(3a+3b+1)=4
(3a+3b-2)(3a+3b+1)=4 求a+b的值
希望能有过程
(3a+3b-2)(3a+3b+1)=4 (3a+3b-2)(3a+3b+1)=4 求a+b的值 希望能有过程
(3a+3b)²-(3a+3b)-2=4
(3a+3b)²-(3a+3b)-6=0
(3a+3b-3)(3a+3b+2)=0
3a+3b-3=0
a+b=1
3a+3b+2=0
a+b=-2/3