if x:y = 2:5 then find the value of 5x+2y/5x+6y
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Given 5x - 2y = 7 and xy =2. We know, (a + b) 2 = a2 + b2 + 2ab or (a + b)2 = a2 + b2 - 2ab + 4ab = (a - b)2 + 4 ab. So,. (5x+2y)2 = ( 5x ...
piu1425:
the answer is right but it's a problem on RATIO. so for this problem it's not right. but thanks.
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