find the value of 16a^2+25b^2 if (4a+5b)=12 and ab =2
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8
Answer:
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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