(2x+5)² find the following by using identity-1
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Answer:
4x² + 25 + 20x
Step-by-step explanation:
(2x+5)²
(a + b)² = a² + b² + 2ab
a = 2x, b = 5
(2x)² + (5)² + 2(2x)(5)
4x² + 25 + 20x
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