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rusak2 [61]
4 years ago
12

Help me with this question please

Mathematics
2 answers:
Free_Kalibri [48]4 years ago
8 0

Answer:

7a(3-a)

Step-by-step explanation:

21a-7a²

there GCF is 7

and has the same variable a

=7a(3-a)

MakcuM [25]4 years ago
7 0
You can always just Square root the seven a square. And then just square root the other side which is 21 a.
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