Find the cube of (2x+5).

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A 8x^3+60x^2+150x+125
B 8x^3+150x^2+60x+125
C 4x^3+60x^2+150x+125
D 4x^3+60x^2+150x+25

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Answer: A. 8x^3+60x^2+150x+125

Use (a + b)^3 = a^3 + 3a^2b + 3ab^2 + b^3 with a = 2x, b = 5: 8x^3 + 3(4x^2)(5) + 3(2x)(25) + 125 = 8x^3 + 60x^2 + 150x + 125.

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Find the cube of (2x+5).

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