Question

Efetue a soma: a) √5-√20+2√45 b) √8 + 2√4 - 3√16

Answer 1

• √5 - √20 +2√5
• √5 -2√5+6√5
• 3√5

•√8+2√4-3√16

• 4√2+4-3.4
• 4√2 -8