Question

simplify the following surd expressions
1) 9 root 3 - 4 root 3 + root 5 +2 root 5
2) 10 root 2 + 4 root 7 - 6 root 2

Answer 1

Step-by-step explanation:

1)9root 3-4 root 3+root 5 +2root 5

=(3(4√5+√3)+2(4√5-√3)/(80-3)

=(12√5+3√ 3 + 8√3)/77

=(20√5+√3)/77

=20/77(√5)+1/77(√3)

=Therefore a = 20/77

= and b= 1/77