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beks73 [17]
3 years ago
14

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

Mathematics
1 answer:
FromTheMoon [43]3 years ago
6 0

Answer:

4

Step-by-step 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

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