Iversonprajinogviz
Answered

perform the indicated operation: 21√7 - (-6√7)
a. 27√7
b. 15√7
c. 12√7
d. 16√7​

Sagot :

AGboiiviz

SOLUTION

Remember that when the radicant and the index of a radical expressions are thesame , They can be added nor subtracted.

  • 21√7 - (-6√7)
  • 21√7 + 6√7
  • 27√7

ANSWER

  • OPTION A (27√7)

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