Question

1)(3-√5)²-6(1-√5)
2)√х=5
3)√18b-3√3a+√12a-4√2b

Answer 1

1
9-6√5+5-6+6√5=8
2
(√x)²=5²
x=25
3
3√2b-3√3a+2√3a-4√2b=-√3a-√2b