Question

Which of the following equations would have the roots -1/2 and 3/5?
A) (2x - ­ 1)(5x + 3) = 0
B) (1x + 2)(3x ­- 5) = 0
C) (2x + 1)(5x - ­ 3) = 0
D) (1x - ­ 2)(3x + 5) = 0

Answer 1

A, put it into a graphing calculator as you see them.

Answer 2

\[(ax+b)(cx-d)=0 \]
roots would be
\[-\frac{ b }{ a } \] and \[\frac{ d }{ c }\]