Question

find the value of the polynomial 5x² + 7x -10 at x= -2 .​

Answer 1

Step-by-step explanation:

18

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Answer 2

Answer:

Given: α,β are zeroes of the polynomial 5x

2

−7x+2

To find the value of

α

1

+

β

1

Sol: From the given quadratic equation,

α+β=

5

7

and αβ=

5

2

Therefore,

α

1

+

β

1

=

αβ

α+β

=

5

2

5

7

⟹

α

1

+

β

1

=

2

7

Step-by-step explanation:

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