2 years ago

3.The side of a square frame is (2b - 1) inches. Find its area.

1 answer:

5 0

Answer:

Step-by-step explanation:

(a - b)² = a² + 2ab + b²

Area of square frame =side²

= (2b - 1)²

= (2b)² - 2*2b * 1 + 1²

= 4b² - 4b + 1

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