document.write( "Question 641364: Perform the indicated operations and simplify the expression.
\n" ); document.write( "7x2 - {x^2 + 4 - x[x - (7x - 4)]} + 7 \n" ); document.write( "

Algebra.Com's Answer #403626 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( " $\"7x%5E2+-%28x%5E2+%2B+4+-+x%28x+-%287x+-4%29%29%29+%2B+7\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"7x%5E2+-+%28x%5E2+%2B+4+-+x%28x+-7x+%2B4%29%29+%2B+7\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"7x%5E2+-+%28x%5E2+%2B+4+-+x%5E2+%2B7x%5E2+-4x%29+%2B+7\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"7x%5E2+-+%28cross%28x%5E2%29+%2B+4+-cross%28+x%5E2%29+%2B7x%5E2+-4x%29+%2B+7\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"7x%5E2+-+%28+4%2B7x%5E2+-4x%29+%2B+7\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"7x%5E2+-4-7x%5E2+%2B4x+%2B+7\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"cross%287x%5E2%29+-4-cross%287x%5E2%29+%2B4x+%2B+7\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"-4%2B4x+%2B+7\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"4x+%2B3\"$ \r
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