document.write( "Question 958290: I am currently working on differences of square and grouping in the greatest common factor my current problem I don't understand is 4x squares minus 121 \n" ); document.write( "
Algebra.Com's Answer #585690 by josgarithmetic(39617)\"\" \"About 
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The lesson is to simply build and apply the formula. You have \"%284x%29%5E2-121\". Recognize that \"121=11%5E2\". \n" ); document.write( "
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