Evaluate: (5x + 4y) (5x – 4y)

25x2 – 4y2

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25x2 – 16y2

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25x2 + 16y2

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5x2 – 16 y2

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Solution

The correct option is B
25x2 – 16y2

(5x + 4y)(5x – 4y) = (5x)² – (4y)² = 25x² – 16y²

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