2 years ago

Pls anwer this qestion it is worth 30 points

Mathematics

1 answer:

Sveta_85 [38]2 years ago

6 0

Answer:

Step-by-step explanation:

25b² + 70b + ....

( 5b + 7)² = 5×5b² + 2×5×7b + 7×7 = 25b² + 70b + 49

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