Question

Q.....


f(x) = x! + x! - x²
f(5) =.......


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Answer 1

f(x) = x! + x! - x²

f(5) = 5! + 5! - 5²

f(5) = (5 × 4 × 3 × 2 × 1) + 5! - 5²

f(5) = (20 × 3 × 2 × 1) + 5! - 5²

f(5) = (60 × 2 × 1) + 5! - 5²

f(5) = (120 × 1) + 5! - 5²

f(5) = 120 + 120 - (5 × 5)

f(5) = 240 - 25

f(5) = 215

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Answer 2

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f(x) = x! + x! - x²

f(5) = 5! + 5! - 5²

f(5) = 5(4)(3)(2)(1) + 5(4)(3)(2)(1) - 5(5)

f(5) = 5(4)(3)(2) + 5(4)(3)(2) - 5(5)

f(5) = 5(4)(6) + 5(4)(6) - 5(5)

f(5) = 5(24) + 5(24) - 5(5)

f(5) = 120 + 120 - 25

f(5) = 120 + 95

f(5) = 215

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