Question: ok so for this problem we need to write the answer in interval notation, and in theanswer key its [-5/3,2] and i understand where the

ok so for this problem we need to write the answer

ok so for this problem we need to write the answer in interval notation, and in theanswer key its [-5/3,2] and i understand where the points came from and why itsusing brackets but why doesn't it use union? like (-infini, -5/3]U[2, infini) (edited)4. 3x²-x-10 ?0

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