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Start learning 50% faster. Sign in nowI. 12x2+ 22x + 8 = 0 => 12x2+ 16x + 6x + 8 = 0 => 4x(3x + 4) + 2(3x + 4) = 0 => (3x + 4) (4x + 2) = 0 => x = -4/3, -1/2 II. 4y2- y − 3 = 0 => 4y2- 4y + 3y - 3 = 0 => 4y(y – 1) + 3(y – 1) = 0 => (y – 1) (4y + 3) = 0 => y = 1, y = -3/4 Hence, relation cannot be established between x and y. Alternate Method: if signs of quadratic equation is +ve and +ve respectively then the roots of equation will be -ve and -ve. So, roots of first equation = x = -4/3, -1/2 if signs of quadratic equation is - ve and -ve respectively then the roots of equation will be +ve and -ve. (note: +ve sign will come in larger root) So, roots of second equation = y = 1, -3/4 After comparing we can conclude that relationship cannot be established between x and y.
Refer to the given number, symbol series and answer the question that follows.
(Left) 3* @ 5% 3 + = 3 3% 8 7 & 5 $ 7 5 & # * 8 2 @ 5 (Right)
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Which two signs should be interchanged to make the following equation correct?
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