Question

use a suitable identity to get rach of the following products .
1) (2y+5) (2y+5)​

Answer 1

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• (2y + 5) (2y + 5)
• = (2y + 5)²
• = (2y)² + 2(2y)(5) + (5)²
• = 4y² + 20y + 25

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