document.write( "Question 363975: help me please!\r
\n" ); document.write( "\n" ); document.write( "find the measure of the area of the shaded region. Simplify.\r
\n" ); document.write( "\n" ); document.write( "inner rectangle:
\n" ); document.write( "L= 2x
\n" ); document.write( "W= 8x^2 + 12x + 8\r
\n" ); document.write( "\n" ); document.write( "outer rectangle:
\n" ); document.write( "L= 5x
\n" ); document.write( "W= 12x^2 + 9x - 6
\n" ); document.write( "
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Algebra.Com's Answer #259683 by vasumathi(46)\"\" \"About 
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Solution:inner rectangle:
\n" ); document.write( "L= 2x
\n" ); document.write( "W= 8x^2 + 12x + 8
\n" ); document.write( "Area of the inner rectangle is ..
\n" ); document.write( "L*W = 2x(8x^2+12x +8)=16 x^3+24 x^2+16x
\n" ); document.write( "outer rectangle:
\n" ); document.write( "L= 5x
\n" ); document.write( "W= 12x^2 + 9x - 6\r
\n" ); document.write( "\n" ); document.write( "Area of the outer rectangle is ...
\n" ); document.write( "L*W = 5x(12x^2+9x-6)=60 x^3+45x^2-30x
\n" ); document.write( "The area of the shaded portion is the difference of these two areas\r
\n" ); document.write( "\n" ); document.write( "A = 60 x^3+45x^2-30x-(16 x^3+24 x^2+16x )
\n" ); document.write( "A = 60 x^3+45x^2-30x-16x^3-24x^2-16x
\n" ); document.write( "A = 44 x^3 +21 x^2-46 x
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