Question 160203
I am doing my homework assignment and I come across this problem...
squareroot sign 28 + 4 squarroot sign 7 - 2 squareroot sign 24
I know I should be able to figure this out, but my brain is fried!!!
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Then stop smoking so much crack! <font face = "wingdings" size = 7>J</font>
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{{{sqrt(28) + 4sqrt(7) - 2sqrt(24)}}}

Write {{{28}}} as {{{4*7}}} and {{{24}}} as {{{4*6}}}

{{{sqrt(4*7) + 4sqrt(7) - 2sqrt(4*6)}}}

Take individual square roots:

{{{sqrt(4)sqrt(7) + 4sqrt(7) - 2sqrt(4)sqrt(6)}}}

{{{2sqrt(7) + 4sqrt(7) - 2(2)sqrt(6)}}}

{{{2sqrt(7) + 4sqrt(7) - 4sqrt(6)}}}

The first two terms are like terms, so combine them:

{{{6sqrt(7) - 4sqrt(6)}}}

Edwin</pre>