Question

Can someone solve with explanation plz?​

Answer 1

Solving for i is outside the radical .

• a=5+√3i
• b=5-√3i

`\\ \sf\longmapsto ab`

`\\ \sf\longmapsto (5+√(3)i)(5-√(3)i)`

`\\ \sf\longmapsto 5^2-(√(3)i)^2`

`\\ \sf\longmapsto 25-3i^2`

• i=√-1

`\\ \sf\longmapsto 25-3(-1)`

`\\ \sf\longmapsto 25+3`

`\\ \sf\longmapsto 28`