Math, asked by celinjohnm, 13 hours ago

Q. If A and B are zeroes of the polynomial 2x²-3x-5, then A+B is equal to

a. 3
b. -3
c. -3/2
d. 3/2

Answers

Answered by kamalhajare543
11

Answer:

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  • Q. If A and B are zeroes of the polynomial 2x²-3x-5, then A+B is equal to

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Solution:-

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  \\ \sf \qquad \longrightarrow \: 2x²-3x-5 \\  \\  \sf \longrightarrow Here,  \bf \: A=2, B=-3, C=-5 \\  \\  \longrightarrow\sf \: Sum  \: of \:  \:  zeros =\frac{ -B}{A}\\ \\ \longrightarrow\sf \alpha + \beta=\frac{3}{2}

  • And,

  \qquad \longrightarrow\sf \: Products  \:  \: of  \:  \: Zeros = \frac{C}{A}\\ \\ \sf \longrightarrow \alpha ×\beta =-\frac{-5}{2} \\  \\\longrightarrow \frac{\alpha +\beta}{\alpha × \beta}= \dfrac{ \frac{3}{2}}{  \frac{ - 5}{2} } \\  \\ \longrightarrow \sf \:  \frac{3}{2}  \times  \frac{2}{ - 5}  \\  \\ \longrightarrow \sf =  \underline{ \purple{   \frac{ - 3}{5} }}

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Hence, option 3 is correct

Answered by rameshlotus5678
1

Answer:

-3/5 it is your answer

Step-by-step explanation:

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