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If

b^2=3a^2 is obtained when

b is in lowest form, which property is used to prove that

b is divisible by 3?

Answer and explanation

Correct answer: Prime divisor property

Since 3 is prime,

b^2=3a^2 shows that 3 divides

b^2. By the prime divisor property, 3 must divide

b. This leads to a contradiction with the lowest-form assumption. In exams, state the prime-property step explicitly.

Related tags

Number SystemsIrrational NumbersProof Of IrrationalitySquare Root 3Prime Divisor PropertyProof Of Irrationality Of Square Root 2 And Square Root 3MathematicsClass 9 Mcq

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