Question 83442
{{{ sqrt(7)*(2sqrt(3)+3sqrt(7)) }}}


Use the distributive property, and multiply the numbers that are inside the square roots and keep them inside the square root.

{{{2*sqrt(21) + 3*sqrt(49) }}}

{{{2*sqrt(21) + 3*7 }}}
{{{2*sqrt(21) + 21 }}}


See also, my Lesson Plans on Square Roots in algbra.com, or see my own website by clicking on my tutor name "rapaljer" anywhere in algebra.com.  Look for "MATH IN LIVING COLOR", then look for Basic Algebra, Chapter 5.  See the section relating to products of square roots.


R^2 at SCC