Find the Roots of the quadratic equation.
2x2 + 7 – 30 = 0

Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Prove that quadrilateral is a rhombus.