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Find the area of the shaded region

Find the area of the shaded region-example-1

1 Answer

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That's a big square, area (9x+9)² less a little square, area x²

A = (9x+9)² - x²

A = 81x² + 162x + 81 - x²

A = 80x² + 162x + 81

Answer: 80x² + 162x + 81

User Thomas Druez
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