Simplify: (5x2 - 4x + 7) – (2x2 – 3x – 4)
o 3x2 - 7x + 11
o3x2 - x + 11
o 3x2 + x + 11
3x2 - x-3

Find the value of x. round the length to the nearest tenth

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.