Question

Solve the equation: (3x - 2)(7x + 1) = 0.

A. {2/3, -1/7}
B. {-2/3, 1/7}
C. 2/3 only
D. -1/7 only
E. no solution

Answer 1

plug each value you into the equation to see which of those give you a true statement

Answer 2

A and B have 2 values so how do I plug that in?? Like this?

\[\left( 3\times2/3-2 \right)\left( 7\times-1/7+1 \right)\]

Answer 3

Plug in one at a time. \[(3x-2)(7x+1)=0 \rightarrow (3(\frac{2}{3}) - 2)(7(\frac{2}{3}) + 1) = 0\]
However, if you set each part equal to 0 you will have your answer: \[(3x-2)(7x+1)=0 \rightarrow 3x-2=0 \space, \space 7x+1=0\] and solve for x in each one.

Answer 4

ok.. thank you!