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A medium difficulty HSC math problem on product of two irrationals: counterexample with full step-by-step solutions.
Proofs
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A medium difficulty HSC math problem on quadratic residues modulo 5 with full step-by-step solutions.- Published on
A medium difficulty HSC math problem on rational plus irrational is irrational with full step-by-step solutions.- Published on
A hard difficulty HSC math problem on rationality of cube roots with full step-by-step solutions.