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Sagot :
Answer:
12kr⁷ is the equivalent expression.
Step-by-step explanation:
We need to find an expression that is equivalent to [tex](144k^2r^{14})^{1/2}[/tex]
We know that, 12² = 144
[tex](144k^2r^{14})^{1/2}=(12^2\times k^2\times r^{14})^{1/2}\\\\=12^{2\times \dfrac{1}{2}}\times k^{2\times \dfrac{1}{2}}\times r^{14\times \dfrac{1}{2}}\\\\=12\times k\times r^7\\\\=12kr^7[/tex]
So, the equivalent expression is [tex]12kr^7[/tex]. Hence, the correct option is (B).
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