if 2a + 7b=11 and ab=2 find the value of 4a^2 49b^2
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Answer:
4a²+49b²=65
Step-by-step explanation:
2a + 7b=11 and ab=2
2a+7b=11
squaring we get
4a²+49b²+28ab=121
4a²+49b²+28*2=121
4a²+49b²=121-56
=65
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