Question

Can someone help me multiply (-2+square root of 7)(-2-square root of 7) and how to get the answer step by step

Answer 1

3

Explanation:

Simply multiply the radicals to get the answer.

Answer 2

Answer: -3

`(-2-√(7))(-2+√(7))=(-2).(-2)-2√(7)+2√(7)-7=4-7=-3`

Explanation: