How do you simplify #4sqrt20 - sqrt45 + 7*sqrt5#?

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Answer 1 · 2018-05-27T17:29:51

#12*sqrt(5)#

#4*sqrt(20) - sqrt(45)+7*sqrt(5)#

Simplifying
#4*sqrt(5*4) - sqrt(5*9)+7*sqrt(5)#

#4*2*sqrt(5) - 3*sqrt(5)+7*sqrt(5)#

#8*sqrt(5) - 3*sqrt(5)+7*sqrt(5) = 12*sqrt(5)#

I hope this hekos,
Steve

How do you simplify #4*sqrt20 - *sqrt45 + 7*sqrt5#?