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In the function f(x) = 5(x2 − 4x + ) + 15, what number belongs in the blank to complete the square?
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In the function f(x) = 5(x2 − 4x + ) + 15, what number belongs in the blank to complete the square?

User Bruno Crosier
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1 Answer

4 votes

Answer:

4

Explanation:


f(x) = 5( {x}^(2) - 4x + ) + 15 \\ = 5( {x}^(2) - 4x + 4) + 15 \\ = 5( {x}^(2) - 4x + {2}^(2) ) + 15 \\ = 5 (x - 2)^(2) + 15

User I Stevenson
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