Solve for x: 2x^2 + x - 4 = 0

i got it wrong. i can't figure out the steps to get to the correct answers. : -(

Divide. write in the simplest form. 4 1/6 divided by 10

Iwill give brainliest. suppose tommy walks from his home at (0, 0) to the mall at (0, 5), and then walks to a movie theater at (6, 5). after leaving the theater tommy walks to the store at (6, 0) before returning home. if each grid square represents one block, how many blocks does he walk?

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585