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(6), The ratio of a and b in the equation 6a²+5ab-^ 662 = 0 is :(a) 4:5 0 (b) 5:40 (d) 4:30 2:3 |
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Answer» option c is the correct answer of the given question The answer is a:b::2:3 6a^2+5ab-6b^2=6a^2+9ab'4ab-6b^2=3a(2a+3b)-2b(2a+3b)= (3a-2b)(2a+3b)=:; 3a/3b=2b/3b= a/b=2/3==b=3; a=2 |
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