can anyone only help me with this question pls
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Vertebrate, also called Craniata, any animal of the subphylum Vertebrata, the predominant subphylum of the phylum Chordata. They have backbones, from which they derive their name. ... The major groups of vertebrates include fishes, amphibians, reptiles, birds, and mammals.
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Step-by-step explanation: 1/2 ^-2 +1/3^-2 + 1/4^-2
2^2 + 3^2 + 4^2
4+ 9 + 16
29
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