∛(8+3√21) + ∛(8-3√21)
solve without calculator
2 answers:
Answer:
1
Step-by-step explanation:
I was thinking about it and I prepared my paper and pen and started typing the problem but then I realized this...
<u>8</u><u>+</u><u> </u> and <u>8</u><u>-</u>
Then I was like
OK....
Answer: 16
Step-by-step explanation:
8+3√21 + 8-3√21
= 8 +8 +3√21 -3√21
= 16
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