Kareem Jafaar's answer to zul's Secondary 4 E Maths Singapore question.
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b) HCF= 2³×3²×5
c) k=2×5×7
d) 225=3²×5²
255r=3²×5²×2³×3⁴×5
=2³×3⁶×5³
=729000
∛729000=90
Therefore, 225r is a perfect square.
c) k=2×5×7
d) 225=3²×5²
255r=3²×5²×2³×3⁴×5
=2³×3⁶×5³
=729000
∛729000=90
Therefore, 225r is a perfect square.
Date Posted:
3 years ago
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