document.write( "Question 777073: which strategy do I use to factor 18z+45+z^2 ? \n" ); document.write( "

Algebra.Com's Answer #473904 by 1998Baby(63) $\"\"$ $\"About$

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first make it into standard form
\n" ); document.write( "z^2+18+45
\n" ); document.write( "then you have to find numbers that when multiplied equal 45 and when added equal 18.
\n" ); document.write( "the numbers would be 15 and 3
\n" ); document.write( "then you put them in the equation.
\n" ); document.write( "z^2+15z+3z+45
\n" ); document.write( "then you factor by grouping
\n" ); document.write( "z(z+15)+3(z+15)
\n" ); document.write( "if you did it right you should have the same numbers in the parenthesis.
\n" ); document.write( "then you put z+3 together
\n" ); document.write( "the final answer should look like this: (z+3)(z+15)
\n" ); document.write( "if you had the equation like this in the beginning: 18z+45+z^2=0 the answer would be z=-3,-15 \n" ); document.write( "

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