document.write( "Question 375775: solve:\r
\n" ); document.write( "\n" ); document.write( "a^2-6a-27=0\r
\n" ); document.write( "\n" ); document.write( "help?
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Algebra.Com's Answer #267226 by jessica43(140)\"\" \"About 
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x^2-6x-27=0
\n" ); document.write( "To solve this problem you need to factor the trinomial, which is the opposite of the FOIL method. The factors will have this form:
\n" ); document.write( "(x A)(x B)
\n" ); document.write( "where A and B will be the factors of the third term (-27). The factors of -27 are: -1, 1, -3, 3,-9, 9, -27, and 27. So these are our possibilities of A and B: -1&27, 1&-27, -3&9, 3&-9.
\n" ); document.write( "Now, we need to see which of these combinations, when added, will equal -6 (since the second term of our trinomial is -6x).
\n" ); document.write( "The only combination that could equal -6 when added is -9 and 3.
\n" ); document.write( "So:
\n" ); document.write( "x^2 - 6x - 27 = 0
\n" ); document.write( "(x-9)(x+3)= 0
\n" ); document.write( "So for this to equal zero, x = 9 or x = -3.
\n" ); document.write( "Your answers are x = 9 and x = -3.
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