Question

1) Racionalize os denominadores das frações abaixo:

a) 9√2/2√2+5=

b) √2-3/1-√2=

c) 1/√3+√2-√6=

Answer 1

a) 9√2/2√2+5= 14
9x2÷2+5
9x1+5
9+5
x=14

b)√2-3/1-√2= -3
√2-3-√2
x=-3

c) 1/√3+√2-√6= 7√3/3
1√3/√3√3+√2x6
√3/3+√12
√3/3+√2²x3
√3/3+√2²√3
√3/3+2√3
√3/3+2√3/1
√3/3+3x2√3/3x1
√3/3+6√3/3
√3+6√3/3
x=7√3/3