Christa solved the equation 5 (x-2)+6= 2x-4+ 3x and obtained -4 = -4. this means that the equation has
a. no solution
b. one solution
c. two solutions
d. many solutions

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

Solve the equation by completing the square. x^2+2x=17