Simplify expression without using rationalizing the denominator

Question

7(sqroot)15 - 2(sqroot)5

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           (sqroot)5

 

simplify by seperating terms and do not use rationalizing the denominator

Answer 1

Hi Ella,

 

Factor the numerator using the common factor of sqrt(5)

√5(7√3 - 2)

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√5

 

√5s cancel out and the answer is

= 7√3 - 2