document.write( "Question 35719: if the box has a surface area of 214cm squared, find the the value of x. side1 is x+1, side 2 is x+2 and side 3 is x \n" ); document.write( "
Algebra.Com's Answer #21866 by venugopalramana(3286)\"\" \"About 
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if the box has a surface area of 214cm squared, find the the value of x. side1 is x+1, side 2 is x+2 and side 3 is x
\n" ); document.write( "SURFACE AREA =2*(LB+BH+HL)=214
\n" ); document.write( "X(X+1)+(X+1)(X+2)+X(X+2)=214/2=107
\n" ); document.write( "X^2+X+X^2+2X+X+2+X^2+2X=107
\n" ); document.write( "3X^2+6X-105=0
\n" ); document.write( "X^2+2X-35=0
\n" ); document.write( "X^2+7X-5X-35=0
\n" ); document.write( "X(X+7)-5(X+7)=0
\n" ); document.write( "(X+7)(X-5)=0
\n" ); document.write( "X=5 SINCE NEGATIVE VALUES ARE NOT RELEVANT
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