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Find the value of the expression r^4 - 5r^3- 4r^3+ 5r + 75 when r = 5

1 Answer

5 votes

Answer: -400

Explanation:

Simply replace every r in the equation with 5 and use PEMDAS.

5^4-5(5)^3-4(5)^3+5(5)+75

User Adam Stone
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