Question

Which of the following is the maximum value of the equation?

Answer 1

Answer:

y = - x^2 + 2x + 5

  = -(x^2 - 2x + 1) + 6

  = -(x - 1)^2 + 6

-(x - 1)^2 always smaller or equal to 0

=> y is smaller or equal to 6

=> Option A is correct

Hope this helps!

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