Math, asked by subuhiali0, 10 months ago

plzz help maths .....​

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Answered by Anonymous
3

Answer \:  \:  \:  \\  \\ Given \:  \: Quadratic \:  \: Equation \: Is \:  \\  \\ 2x {}^{2}  + px  = q \\  \\ if \:  \: (x - 5) \:  \: is \: the \: factor \:of \: this \: equation \: \:   \\ then \ x \:  = 5 \:  \: is \: its \: root \\  \\ so \:  \: its \: two \: roots \: are \:  \:  \:  - 3 \: and \: 5 \\  \\ for \:  \: x =  - 3 \\  \\ 2( - 3) {}^{2}  + p( - 3)  = q \\  \\ 18 - 3p = q \\  \\ q + 3p = 18 \:  \: ....Equation \:  \:  \:  \: i \\  \\ for \:  \: x = 5 \\  \\ 2(5) {}^{2}  + p(5) = q \\  \\ q - 5p = 50 \:  \: ....Equation \:  \:  \: ii \\  \\ now \: subtract \: both \: the \: equations \: we \: have \\  \\ 3p + 5p =  - 32 \\  \\ 8p =  - 32 \\  \\ p =  \frac{ - 32}{8}  \\  \\ p =  - 4 \\  \\ put \:  \: value \: of \: p \: in \: Equation \: i \: we \: have \\  \\ q - 3( - 4) = 18 \\  \\ q  + 12 = 18 \\  \\ q = 18 - 12 \\  \\ q = 6 \\  \\ Therefore \:  \:  \:  p =  - 4 \:  \: and \:  \: q = 6


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Answered by myiitgoal2122
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