What number needs to be added to both sides of the equation in order to complete the square? x2−18x=17 enter your answers in the boxes. x^2−18x + __ =17 + __

81

The square (x -a)² is ...

... (x -a)² = x² -2ax +a²

You can see the constant term (a²) is the square of half the x-coefficient ...

... a² = (-2a/2)²

The square of half the x-coefficient in your equation is ...

... (-18/2)² = (-9)² = 81

So, your equation is ...

10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6