(5+2sqrt(3))(4-(3sqrt3))

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Guest Aug 20, 2014

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Best Answer

FOIL (First, Outer, Inner, Last) creates (5*4)+(5*-3√3)+(2√3*4)+(2√3*-3√3)=20-15√3+8√3-18=2-7√3

Btw you can create the √ sign using ALT+ keypad numbers 2+5+1 (or if you're using a laptop, ALT+FN+k+i+j)

Guest Aug 20, 2014

Guest · Answer 1 · 2014-08-20T09:32:04

FOIL (First, Outer, Inner, Last) creates (5*4)+(5*-3√3)+(2√3*4)+(2√3*-3√3)=20-15√3+8√3-18=2-7√3

Btw you can create the √ sign using ALT+ keypad numbers 2+5+1 (or if you're using a laptop, ALT+FN+k+i+j)