Algebra-1

Let's expand each of the given formulas using the formula (a + b)² = a² + 2ab + b²:

For option A:
a = 25x, b = 9
then, (25x + 9 )² = (25x)² + 2(25x)(9) + (9)² = 625x² + 450x + 81.

For option B:
a = 5x, b = 3
then, (5x + 3 )² = (5x)² + 2(5x)(3) + (3)² = 25x² + 30x + 9.

For option C:
a = 5x, b = 2
then, (5x + 2 )

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