document.write( "Question 1031901: Solving equations by factoring:
\n" ); document.write( "3zē=12z
\n" ); document.write( "I know the answer is {0,4} from the back of the book
\n" ); document.write( "I'm just not sure how to get it. \n" ); document.write( "
Algebra.Com's Answer #646580 by addingup(3677)\"\" \"About 
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Solve: 3zē=12z
\n" ); document.write( "3zē=12z
\n" ); document.write( "3zē-12z = 0
\n" ); document.write( "3z(z-4) = 0 Divide both sides by 3 (and remember 0/3 = 0)
\n" ); document.write( "z(z-4) = 0 Now split this into 2 equations:
\n" ); document.write( "z = 0
\n" ); document.write( "or
\n" ); document.write( "z-4 = 0 Add 4 on both sides:
\n" ); document.write( "z = 4
\n" ); document.write( "There you have it, z=0 or z=4 {0,4}\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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