Question

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

Answer 1

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!

:)