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Mathematics 16 Online
OpenStudy (anonymous):

Solve: (x-8)(3x+4)=0

OpenStudy (kropot72):

The solutions are found by considering that (x-8) or (3x+4) must equal zero. So put each term equal to zero and solve to find the two values of x.

OpenStudy (anonymous):

First one is 8 right?

OpenStudy (kropot72):

Good! x = 8 is one solution.

OpenStudy (anonymous):

Looks like the second one must be a negative number????

OpenStudy (kropot72):

Yes. The second solution is a negative fraction.

OpenStudy (anonymous):

4/8 which is equal to 1/2? I am unsure how to get the solution

OpenStudy (kropot72):

\[3x+4=0\] Subtracting 4 from both sides of the equation gives: \[3x=-4\] Now divide both sides by 3 to find x.

OpenStudy (anonymous):

-4/3

OpenStudy (kropot72):

You have the other solution :) x = -4/3

OpenStudy (anonymous):

Thank you!!!

OpenStudy (kropot72):

You're welcome :)

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