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Evaluating x2x^2, 4x4^x, and 3x2+4x+13x^2 + 4x + 1 at x=3x = 3

When x=3x = 3, evaluating these three expressions involves substituting 33 for xx and simplifying. For x2x^2, the substitution becomes 323^2, which equals 99. In the case of 4x4^x, the variable serves as an exponent, so replacing xx yields 434^3, which involves multiplying 44 by itself three times to reach 6464. For the multi-term expression 3x2+4x+13x^2 + 4x + 1, inserting 33 results in 3(3)2+4(3)+13(3)^2 + 4(3) + 1. Applying the order of operations, one must evaluate the exponent first to obtain 3(9)+4(3)+13(9) + 4(3) + 1, then perform multiplications to reach 27+12+127 + 12 + 1, and finally add the components together to yield 4040.

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Updated 2026-04-17

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