document.write( "Question 298409: Help!!
\n" ); document.write( "Solve.
\n" ); document.write( "let f(x) = (x + 10)^2. Find x so that f(x) = 72
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Algebra.Com's Answer #214678 by chibisan(131) $\"\"$ $\"About$

You can put this solution on YOUR website!
Combine both functions together,
\n" ); document.write( "(x + 10)^2 = 72
\n" ); document.write( "x + 10 = +- sqrt(72)
\n" ); document.write( "x = +- sqrt(72) - 10
\n" ); document.write( "x = -1.51 , -18.5 ( 3 significant figures.) \n" ); document.write( "

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