document.write( "Question 125580: what is the cube root of x+2 =6\r
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document.write( "what is the 5th power of x^2 -13 =1\r
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document.write( "what is the sq.root of 2x + 5 - the sq. root of x-2 = 3\r
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Algebra.Com's Answer #91992 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! what is the cube root of x+2 =6 \n" ); document.write( "cube both sides to get x+2 = 216 \n" ); document.write( "x = 214 \n" ); document.write( "-------------------\r \n" ); document.write( "\n" ); document.write( "what is the 5th power of x^2 -13 =1 \n" ); document.write( "Take the 5th root of both sides to get: \n" ); document.write( "x^2-13 = 1 \n" ); document.write( "x^2 = 14 \n" ); document.write( "x = sqrt(14) or x=-sqrt(14) \n" ); document.write( "--------------------------\r \n" ); document.write( "\n" ); document.write( "what is the sq.root of 2x + 5 - the sq. root of x-2 = 3 \n" ); document.write( "sqrt(2x+5) - sqrt(x-2) = 3 \n" ); document.write( "Square both sides to get: \n" ); document.write( "(2x+5)+(x-2)-2sqrt(2x^2+x-10) = 9 \n" ); document.write( "2sqrt(2x^2+x-10) = 3x-6 \n" ); document.write( "Square both sides to get: \n" ); document.write( "4(2x^2+x-10) = 9x^2-36x+36 \n" ); document.write( "x^2-40x+76 = 0 \n" ); document.write( "(x-2)(x-38)=0 \n" ); document.write( "x = 2 or x=38 \n" ); document.write( "Both answers check \n" ); document.write( "============================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |