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Mathematics 21 Online
OpenStudy (anonymous):

z^2+5z=50

OpenStudy (mathstudent55):

Subtract 50 from both sides. Then factor the left side.

OpenStudy (anonymous):

I did but im not getting the correct answer on my multiple choice

OpenStudy (gorv):

z^2+5z-50=0 z^2+(10z-5z)-50=0 z(z+10)-5(z+10)=0

OpenStudy (gorv):

solve it now

OpenStudy (anonymous):

a. z=5 or z=10 b. z=-10 or z=-5 c. z=-10 or z=10 d. z=-5 or z=10

OpenStudy (mathstudent55):

This is after subtracting 50 from both sides: \(z^2 + 5z - 50 = 0\) Now we need to try to factor. Did you try factoring?

OpenStudy (mathstudent55):

You need two number that multiply to -50 and add to +5. What are they?

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