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Evaluate the expression 5x^(3) for x=2.

Evaluate the expression 5x3 5 x^{3} for x=2 x=2 .

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Cube roots of positive perfect cubesright chevron icon

Full solution

Q. Evaluate the expression 5x3 5 x^{3} for x=2 x=2 .
  1. Identify given value: Identify the given value for xx. We are given that x=2x = 2. We need to substitute this value into the expression 5x35x^{3}.
  2. Substitute value in expression: Substitute the value of xx into the expression.\newlineReplace xx with 22 in the expression 5x35x^{3} to get 5×235 \times 2^{3}.
  3. Calculate value of 232^{3}: Calculate the value of 232^{3}. 232^{3} means 22 multiplied by itself 33 times, which is 2×2×2=82 \times 2 \times 2 = 8.
  4. Multiply result by 55: Multiply the result from Step 33 by 55.\newlineNow, multiply 55 by 88 to get 5×8=405 \times 8 = 40.

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