75 pts !! Let ​x^2+6x=5​ .

What values make an equivalent number sentence after completing the square?

Enter your answers in the boxes.

x^2 + 6x +[___] = [___]

The answer is x^2+6x-5=0. This is the standard form for that equation.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

choice b

step-by-step explanation:

f(x) = 88x^2 -264x + 300

the line of symmetry of a parabola is defined by

h = -b/2a

where ax^2 +bx+c=0

so

h = - -264/ (2*88)

h = 3/2

so x = 1.5