Explain why the equation(x-2)^2-40=9 has two solutions. then solve the equation to find the solutions. show all work and i will give brainliest.

Not too good with an explanation, but when seeing the (x-2)^2, you understand that the highest power or the leading term should be . The power of the leading or the highest power would tell you how many solutions that equation has. For example, X + 3 = 0, has 1 solution, x^10 + 1 = 0 has 10 solutions.









Use diamond or any type of factor that you learn

(x - 9)(x+5) = 0
x = 9 or x = -5

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm