(3a+3b-2)(3a+3b+1)=4

yangshuyi10042022-10-04 11:39:541条回答

(3a+3b-2)(3a+3b+1)=4
(3a+3b-2)(3a+3b+1)=4 求a+b的值
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candyliu_514 共回答了21个问题 | 采纳率81%
(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
1年前

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