Mathematics
Senior High
⑻教えて欲しいです🙇🏻♀️
(4x²-4) (9x²+4)=(3x+2y) (3x-2)+
(8) (a+b+3) (a+b-2)+4 (A+3) A-2)+4 = A²+A-6+4
12
14
a²+b²+2ab+a+b-2.
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