If (4a + 5b) = 16 and ab = 4, find the value of 16a2 + 25b2
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sorry dear i will but i am in only 6th standard
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64. Step-by-step explanation: ==: 16a² + 25b² = (4a + 5b)² - 2*4a *5b. = (12)² - 2*4*5*2. = 144 - 80. = 64.
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