What number needs to be added to both sides of the equation in order to complete the square? x^2−18x=17

Three cylinders have a volume of 2836 cm^3. cylinder a has a height of 900 cm. cylinder b has a height of 225 cm. cylinder c has a height of 100 cm. find the radius of each cylinder. use 3.14 as an approximate for π

Which expression is equivalent to (4 +6i)^2? ? -20 + 48i 8 + 12i 16 - 36i 20 + 48i

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?