(x² - 4x + 3) x² + 4x - 3) = 0
Solve this by completing the square

Aphoto of a painting measured 13 x 17 inches the scale of the photo to the original painting is 1 inch to 3 inches. what is the size of this painting

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n