Question

1. √(√21) +√20*√(√21) -√20

2 .1/3 √45+5√180

3.(36x^2+12x+1)^2

Answer 1

1. √(√21) +√20*√(√21) -√20=√(21-20)=√1=1

 

2. 1/3  √45+5√180=√5+30√(5 )=31√5

 

3.(36x^2+12x+1 (36x^2+12x+1)=1296x^4+432x^3+36x^2+432x^3+144x^2+12x+36x^2+12x+1=1296x^4+864x^3+216x^(2    )+24x+1