If M - N = 0.9 and Mn = 0.36, Find: M2 - N2. - Mathematics

If m - n = 0.9 and mn = 0.36, find:
m² - n².

योग

m² - n²
= (m + n)(m - n)
= (±1.5)(0.9)
= ±1.35.

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