prove this is equal to this
(21 m +3m² – (21m-3m)² =24lm²
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Step-by-step explanation:
3m2 - 21m + 30 < 0
3m2 - 6m - 15m + 30 < 0
3m(m - 2) - 15(m - 2) < 0
(m - 2)(3m - 15) < 0
Case 1: (m - 2) > 0 and (3m - 15) < 0
m > 2 and m < 5
Case 2: (m - 2) < 0 and (3m - 15) > 0
m < 2 and m > 5
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