* Required
1. Find area of rectangle with length (3x +
2y) cm and (3x – 2y) cm.
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Answer:
9x² - 4y²
Step-by-step explanation:
Area of rectangle = length × breadth
= (3x + 2y) × (3x – 2y)
= (3x)² – (2y)² ∵ (a + b)(a-b)=a² - b²
= 9x² - 4y²
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