make an equational equal
(__) (×-9)=ײ-81
(20+4)(__)=20²-4²
(___) (2a+3)=4a²-9
(6ײy+3ab) (6ײy-3ab)=(___)-9a²b²
(13+×)(13-×)=(__)-ײ
(__) (×-9)=ײ-81
(20+4)(__)=20²-4²
(___) (2a+3)=4a²-9
(6ײy+3ab) (6ײy-3ab)=(___)-9a²b²
(13+×)(13-×)=(__)-ײ
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Answer:
(x-9)(x-9)x²=81
(20+4)(1-1)=20-4
6x²y+3ab)(6x²y-3ab)=(12)-9a²b²
(13+x)(13-x)=(69)-x²