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Maksim231197 [3]
3 years ago
14

Is ( square root 12 -4)(4+square root 12) rational or irrational

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
4 0
Remember
(a-b)(a+b)=a²-b²

we can rewrite what we were given into
( \sqrt{12}-4)( \sqrt{12}+4)=( \sqrt{12})^2-(4)^2=12-16=-4
definitely rational
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