3 years ago

Rewrite the equation by completing the square. x^2 -4x =0

Mathematics

1 answer:

olasank [31]3 years ago

6 0

Step-by-step explanation:

x² − 4x = 0

To complete the square, take half of the second coefficient, square it, then add the result to both sides.

(-4/2)² = 4

x² − 4x + 4 = 4

(x − 2)² = 4

x − 2 = ±2

x = 2 ± 2

x = 0 or 4

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