Posted by Zack on Friday, January 18, 2013 at 12:36pm.
√80 = √16√5 = 4√5
3√63 = 3*√9√7 = 3*3√7 = 9√7
√125 = √25√5 = 5√5
√175 = √25√7 = 5√7
so, you have
4√5-9√7-5√5-5√7 = -√5 - 14√7
√80 - 3√63 - √125 - √175
=√16√5 - 3√9√7 + √25√5 - √25√7
= 4√5 - 9√7 + 5√5 - 5√7
= 9√5 - 14√7
Argghh, messed up a sign
Steve is right
Related Questions
Algebra 2 - Simplify sqrt80 -3 Sqrt63 - sqrt125 - sqrt175
precalc - How do you solve log5 sqrt125?
Algebra - 1. LCM of 15x^7 and 45x^7 2. Marla can shovel the driveway in 60min ...
Algebra 2 - 1. Simplify: sqrt6(sqrt2/2+sqrt3)-sqrt8 2. Simplify: sqrt(72x^3)-5x ...
Intermediate Algebra - I have a take home test and I'm stuck on a couple. ...
Algebra - Simplify A^6 x a^2b^-2 44,909 in scientific notation Simplify (a^2b^3...
Algebra - 1. Subtract and simplify 18/y-8 - 18/8-y 2. subtract simplify if ...
Radicals w/rational exponents - Could someone please help me with this. Assume ...
Algebra - Multiply and simplify completely 1. (x-2y)^3 Simplify 2. 2(-3x^3 y^2)^...
Intermediate Algebra Simplify - 1/a + 1/c / a^2 - c^2 / ac I am kinda lost on ...
For Further Reading
