document.write( "Question 323154: For i= square root -1, if 3i(2+5i) = x+6i, then x = ? \n" ); document.write( "

Algebra.Com's Answer #231329 by QH(50) $\"\"$ $\"About$

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$\"3i%282%2B5i%29=x%2B6i\"$ First distribute 3i to remove parenthesis
\n" ); document.write( " $\"6i%2B15i%5E2=x%2B6i\"$ because $\"i=sqrt%28-1%29%2C+%7B%7B%7Bi%5E2=-1\"$ replace $\"i%5E2\"$ with -1
\n" ); document.write( " $\"6i%2B15%28-1%29=x%2B6i\"$ now solve for x
\n" ); document.write( " $\"6i-6i-15=x\"$
\n" ); document.write( " $\"-15=x\"$ \n" ); document.write( "

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