document.write( "Question 202091: \n" ); document.write( "
Algebra.Com's Answer #152358 by PRMath(133)\"\" \"About 
You can put this solution on YOUR website!
Simplify these following expressions:
\n" ); document.write( "(2x)^4 x^3
\n" ); document.write( "(-3y)^4
\n" ); document.write( "(3z)^2(6z^2)^-3
\n" ); document.write( "5x2⁄25x5
\n" ); document.write( "10(x+y)^4/5(x+y)^3
\n" ); document.write( "1/6x(3x^2)^3
\n" ); document.write( "(5x^2)^3(1/25x^4)^2
\n" ); document.write( "(2z^2)^-5*z^-10
\n" ); document.write( "(3/x)^4(4/x)^-2
\n" ); document.write( "[2(r-s)]^2/(r-s)^3\r
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\n" ); document.write( "\n" ); document.write( "Let's take a few at a time......\r
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\n" ); document.write( "\n" ); document.write( "I see your first problem as this:\r
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\n" ); document.write( "\n" ); document.write( "\"%282x%29%5E4\"*\"+x%5E3\"\r
\n" ); document.write( "\n" ); document.write( "If that is the problem, then you multiply:\r
\n" ); document.write( "\n" ); document.write( "2 to the 4th power -- 2*2*2*2 = 16 (You distribute the exponent \"4\" to the 2 and to the \"x\"....\r
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\n" ); document.write( "\n" ); document.write( "and then you multiply \"x%5E4\"*\"x%5E3\". Since the bases are the same, you ADD the exponents, so you have \"x%5E7\"\r
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\n" ); document.write( "\n" ); document.write( "FINAL answer: \"16x%5E7\"\r
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\n" ); document.write( "\n" ); document.write( "Next:(-3y)^4\r
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\n" ); document.write( "\n" ); document.write( "That is: -3*-3*-3*-3 = 81 (See how the exponent 4 is distributed to the -3 and to the y?)
\n" ); document.write( "\"y%5E4\" is the second part of the answer\r
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\n" ); document.write( "\n" ); document.write( "FINAL answer: \"81y%5E4\"\r
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\n" ); document.write( "\n" ); document.write( "Next: (3z)^2(6z^2)^-3\r
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\n" ); document.write( "\n" ); document.write( "If the problem is this: \"%283z%29%5E2\"*\"6z%5E2\" raised to the power of -3
\n" ); document.write( "That is \"9z%5E2\" times \"6%5E-3\"times \"z%5E-6\"\r
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\n" ); document.write( "\n" ); document.write( "That becomes: \"9z%5E2\" * \"1%2F6%5E3z%5E6\"\r
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\n" ); document.write( "\n" ); document.write( "Why? The exponent \"2\" distributes to the 3 and to the z.\r
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\n" ); document.write( "\n" ); document.write( "The exponent -3 distributes to the 6 and to the \"z\". HOWEVER, for the \"z\", because you are raising a power to a power, you have to MULTIPLY the exponents. Therefore, the \"z\" becomes \"z%5E-6\" or.... \"1%2Fz%5E6\"\r
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\n" ); document.write( "\n" ); document.write( "The problem is now:\r
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\n" ); document.write( "\n" ); document.write( "\"9z%5E2\"/\"216z%5E6\"\r
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\n" ); document.write( "\n" ); document.write( "THAT becomes\r
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\n" ); document.write( "\n" ); document.write( "\"1%2F24+z%5E4\" (we reduced the fraction \"9%2F216\" to \"1%2F24\".\r
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\n" ); document.write( "\n" ); document.write( "Let's stop here for a second and go over some exponent rules, k? Then if you need help with your other answers, ask again. It seems like you may not understand exponents...........\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E2\"* \"x%5E3\" = \"x%5E5\" When multiplying... if the bases are the same, ADD the exponents\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E3\"/\"x%5E2\" = \"x\" When dividing... if the bases are the same, SUBTRACT the exponents\r
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\n" ); document.write( "\n" ); document.write( "If you raise a power to a power, then MULTIPLY the exponents. \r
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\n" ); document.write( "\n" ); document.write( "If you have a NEGATIVE exponent in the NUMERATOR, just put it in the denominator and make it a POSITIVE exponent:\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E-3\" is really: \"1%2Fx%5E3\"\r
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\n" ); document.write( "\n" ); document.write( "If you have a NEGATIVE EXPONENT in the DENOMINATOR, just put it in the numerator and make it a POSITIVE exponent.\r
\n" ); document.write( "\n" ); document.write( "\"1%2Fx%5E-3\" is really: \"x%5E3\"\r
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\n" ); document.write( "\n" ); document.write( "I hope this helps......\r
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