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20-03-2021
Mathematics

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1. Express the following expression in the form y = a(x - h)? + k
y = - x² + 4x +1

Respuesta :

20-03-2021

Answer:

Step-by-step explanation:

y = -x² + 4x + 1

factor out the leading coefficient

y = -(x² - 4x) + 1

complete the square

y = -(x² - 4x + 2²) + 2² + 1

y = -(x-2)² + 5

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