Select each pair of expressions that are equivalent. 3x + 14 – x + 112 and 4x + 134
2 + 6x and 2(3x + 1)
3(x + 1) – (1 – x) and 2x + 3
3x and 4(x + 1) – x – 4
5.5 + 2.2x + 3.8x – 4.1 and 1.4 + 6x

Use the function nest to evaluate p(x) = 1 + x + · · · + x50 at x = 1.00001. (use the matlab ones command to save typing.) find the error of the computation by comparing with the equivalent expression q(x) = (x51 − 1)/(x − 1).

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0