document.write( "Question 365761: I am so lost in my math class right now and need help.
\n" ); document.write( "I have a test tomorrow. We are working with Complex numbers, factoring and solving polynomial equations, solving quadratic equations by finding the square root, Perfect square trinomials, and graphing quadratic functions,
\n" ); document.write( "Well I have a review worksheet and Im lost on a few things.\r
\n" ); document.write( "\n" ); document.write( "A) Factor the exression.
\n" ); document.write( " 1. 121^2-25\r
\n" ); document.write( "\n" ); document.write( "my attempt. i got -3025 with 55times-55 but I dont think tats right.\r
\n" ); document.write( "\n" ); document.write( "B) Simplify the expression.
\n" ); document.write( " 1. 3sqrt(8)times sqrt(18)
\n" ); document.write( "(I wasnt at school the day we learned this so I'm clueless)\r
\n" ); document.write( "\n" ); document.write( "c) solve the equation.
\n" ); document.write( " 1. 3x^2-100=332\r
\n" ); document.write( "\n" ); document.write( "my attempt 3x^2-100=332
\n" ); document.write( " +100 +100
\n" ); document.write( " 3x^2=sqrt(44)
\n" ); document.write( " sqrt(x^2)=sqrt(144)
\n" ); document.write( " x=12
\n" ); document.write( "My question is, is what method do I use to solve the equation?\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "D) perform the given operation.
\n" ); document.write( " 1. 1-2i
\n" ); document.write( " ----
\n" ); document.write( " 3-5i\r
\n" ); document.write( "\n" ); document.write( "clueless on this one as well.\r
\n" ); document.write( "\n" ); document.write( "Sorry for the overload on problems. I'm just really confused.
\n" ); document.write( "If you could help me understand thatwould be great. Thanks \n" ); document.write( "

Algebra.Com's Answer #260715 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( "A) Factor the exression.
\n" ); document.write( "1. 121^2-25
\n" ); document.write( "my attempt. i got -3025 with 55times-55 but I dont think tats right.
\n" ); document.write( "

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document.write( "    121² - 25\r\n" );
document.write( "    121² - 5²\r\n" );
document.write( "(121 - 5)(121 + 5)   <--- that's factored\r\n" );
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document.write( "    (116)(126)\r\n" );
document.write( "      14616\r\n" );
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\n" ); document.write( "B) Simplify the expression.
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document.write( "     \r\n" );
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\n" ); document.write( "(I wasnt at school the day we learned this so I'm clueless)
\n" ); document.write( "c) solve the equation.
\n" ); document.write( " $\"3x%5E2-100=332\"$
\n" ); document.write( " $\"3x%5E2+=+332%2B100\"$
\n" ); document.write( " $\"3x%5E2+=+432\"$
\n" ); document.write( " $\"x%5E2+=+144\"$
\n" ); document.write( " $\"x+=+%22%22+%2B-+sqrt%28144%29\"$
\n" ); document.write( " $\"x+=+%22%22+%2B-+12\"$
\n" ); document.write( "
\n" ); document.write( "My question is, is what method do I use to solve the equation?
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document.write( "The principle of square roots.\r\n" );
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document.write( "----------------------------------\r\n" );
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\n" ); document.write( "D) perform the given operation.
\n" ); document.write( "

\r\n" );
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document.write( "1-2i\r\n" );
document.write( "----\r\n" );
document.write( "3-5i \r\n" );
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document.write( "multiply by the conjugate of the bottom over itself\r\n" );
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document.write( "1-2i  3+5i   3+5i-6i-10i²   3-i-10i²    3-i-10(-1)   3-i+10   13-i\r\n" );
document.write( "----. ---- = ------------ = --------- = ---------- = ------ = ---- =  \r\n" );
document.write( "3-5i  3+5i   9+5i-5i-25i²    9-25i²      9-25(-1)     9+25     34\r\n" );
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document.write( "Edwin

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