SOLUTION: Simplify by combining like terms. {{{sqrt(63)}}}- {{{2 sqrt 28}}} + {{{5 sqrt7}}} I needed to verify that my answer was correct for this problem. My answer was {{{sqrt (3^2)7

Algebra ->  Square-cubic-other-roots -> SOLUTION: Simplify by combining like terms. {{{sqrt(63)}}}- {{{2 sqrt 28}}} + {{{5 sqrt7}}} I needed to verify that my answer was correct for this problem. My answer was {{{sqrt (3^2)7      Log On


   



Question 73376: Simplify by combining like terms.
sqrt%2863%29- 2+sqrt+28 + 5+sqrt7
I needed to verify that my answer was correct for this problem. My answer was
sqrt+%283%5E2%297 - 2+sqrt%282%5E2%297 + 5+sqrt7

Answer by psbhowmick(878) About Me  (Show Source):
You can put this solution on YOUR website!
sqrt%2863%29+-+2sqrt%2828%29+%2B+5sqrt%287%29
= sqrt%289%2A7%29+-+2sqrt%284%2A7%29+%2B+5sqrt%287%29
= sqrt%289%29%2Asqrt%287%29+-+2sqrt%284%29%2Asqrt%287%29+%2B+5sqrt%287%29
= 3sqrt%287%29+-+2%2A2%2Asqrt%287%29+%2B+5sqrt%287%29
= 3sqrt%287%29+-+4sqrt%287%29+%2B+5sqrt%287%29
= sqrt%287%29%283+-+4+%2B+5%29
= sqrt%287%29%2A4
= 4sqrt%287%29