Mathematics, 12.11.2020 23:10, alexsysantiago54

Amber simplified the expression (a4+7a−16)−(12a3−5a+3) below. Amber made her first error at what step .Problem: (a4+7a−16)−(12a3−5a+3)

Step 1: a4+7a−16−12a3+5a−3

Step 2: a4−12a3+7a+5a−16−3

Step 3: −11a+7a+5a−16−3

Step 4: −11a+12a−16−3

Step 5: −11a+12a−19

Answers: 1

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Amber simplified the expression (a4+7a−16)−(12a3−5a+3) below. Amber made her first error at what ste...