Bsvald63 Bsvald63
  • 24-11-2020
  • Mathematics
contestada

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

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Аноним Аноним
  • 24-11-2020

Answer: -3

[tex](-2-\sqrt{7})(-2+\sqrt{7})=(-2).(-2)-2\sqrt{7}+2\sqrt{7}-7=4-7=-3[/tex]

Step-by-step explanation:

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06kencle07969
06kencle07969 06kencle07969
  • 06-01-2022

Answer:

3

Step-by-step explanation:

Simply multiply the radicals to get the answer.

Answer Link

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