SOLUTION: Please help me solve these equations.I am not sure if my answers are correct. I have to divide and simplify. 3√13 + 7√13= √90 - √10= √75a^3

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Please help me solve these equations.I am not sure if my answers are correct. I have to divide and simplify. 3√13 + 7√13= √90 - √10= √75a^3      Log On


   



Question 350074: Please help me solve these equations.I am not sure if my answers are correct.
I have to divide and simplify.
3√13 + 7√13=
√90 - √10=
√75a^3 + a√12a=
(-5√6) (2√3)=
(√5 + 4) (√5 – 1)=
for the first problem the answer I got was=36
for the second problem the answer I got was=6.32
for the fourth problem the answer I got was= -10sqrt18

Answer by Alan3354(69443) About Me  (Show Source):
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Please help me solve these equations.I am not sure if my answers are correct.
I have to divide and simplify.
3√13 + 7√13=
√90 - √10=
√75a^3 + a√12a=
(-5√6) (2√3)=
(√5 + 4) (√5 – 1)=
for the first problem the answer I got was=36
3√13 + 7√13= 10sqrt%2813%29+=+36.0555
---------------------
√90 - √10=
for the fourth problem the answer I got was= -10sqrt18
----------------------
(√5 + 4) (√5 – 1)= 5+-+4+%2B+3sqrt%285%29
= 1+%2B+3sqrt%285%29