4a Square -3b Square /2a Square +5b Square = 12/19 then a:b
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Answer:
4a²-3b²=12
2a²+5b²=19
=> 2a² = 19-5b²
put in 1st equation.
=> 2(19-5b²)-3b²=12
=> 38 - 10b²-3b² =12
=> 13b² = 26
=> b²=2
=> b=√2
put value of b² in
2a²=19-5b²
=> 2a²=19-5(2)
=> 2a²=9
=> a=3/√2
a/b = (3/√2)/√2 = 3/2
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