A (a+1) -3=… 2x -4 ( x+1 )=… 3 (4a+5) -2 (3a-1)=… kakak tolong ya

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A (a+1) -3=… 2x -4 ( x+1 )=… 3 (4a+5) -2 (3a-1)=… kakak tolong ya

1.a(a+1)-3=a²+1a-3
2.2x-4(x+1)=2x²+2x-4x-4
2x²-2x-4
3. 3(4a+5)-2(3a-1)=12a+15-6a+2
6a+17
Semoga membantu!!!