SOLUTION: here are 2 questions out of 30 that i have to answer. im having problems with sqrts. if i see these done maybe i can get the rest thank you in advance 1. 7x^2 sqrt of 28xy^2

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: here are 2 questions out of 30 that i have to answer. im having problems with sqrts. if i see these done maybe i can get the rest thank you in advance 1. 7x^2 sqrt of 28xy^2       Log On


   



Question 641642: here are 2 questions out of 30 that i have to answer. im having problems with sqrts. if i see these done maybe i can get the rest thank you in advance
1. 7x^2 sqrt of 28xy^2 –y sqrt of 7x^5

2. (2 sqrt of 6 -5)(4 sqrt of 10-5) the 6 and the 10 are only under the sqrt symbol

Answer by MathTherapy(10556) About Me  (Show Source):
You can put this solution on YOUR website!

here are 2 questions out of 30 that i have to answer. im having problems with sqrts. if i see these done maybe i can get the rest thank you in advance
1. 7x^2 sqrt of 28xy^2 –y sqrt of 7x^5

2. (2 sqrt of 6 -5)(4 sqrt of 10-5) the 6 and the 10 are only under the sqrt symbol

7x%5E2%2Asqrt%2828xy%5E2%29+-+y%2Asqrt%287x%5E5%29

7x%5E2%2Asqrt%28y%5E2+%2A+2%5E2+%2A+7+%2A+x%29+-+y%2Asqrt%28x%5E4+%2A+7+%2A+x%29



7x%5E2+%2A+y+%2A+2sqrt%287x%29+-+y+%2A+x%5E2+%2A+sqrt%287x%29

14x%5E2y+%2A+sqrt%287x%29+-+x%5E2y+%2A+sqrt%287x%29%29

highlight_green%2813x%5E2y+%2A+sqrt%287x%29%29



%282+%2A+sqrt%286%29+-+5%29%284+%2A+sqrt%2810%29+-+5%29

----- FOILing the binomials

8sqrt%286+%2A+10%29+-+10sqrt%286%29+-+20sqrt%2810%29+%2B+25

8sqrt%2860%29+-+10sqrt%286%29+-+20sqrt%2810%29+%2B+25

8sqrt%282%5E2+%2A+15%29+-+10sqrt%286%29+-+20sqrt%2810%29+%2B+25

8+%2A+2sqrt%2815%29+-+10sqrt%286%29+-+20sqrt%2810%29+%2B+25

highlight_green%2816sqrt%2815%29+-+10sqrt%286%29+-+20sqrt%2810%29+%2B+25%29

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