If the roots of the equations(given in the picture as question no. 3) are simultaneously real then prove that b2=ac

Two number cubes are rolled- one blue and one yellow. part a) find the probability that the blue cube is less than 3 and the product is 8. part b) is this event independent or dependent? explain why. your

Kylie explained that (-4x+9)^2 will result in a difference of squares because (-4x+9)^2 (-4x+9)^2 =(-4x)^2+(9)^2=16x^2+81

For the equations below which statement is true ? -2x=14 6x=-42