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One of the roots of equation 5m^(2)+2m+k...

One of the roots of equation `5m^(2)+2m+k=0` is `-7/5`. Complete the following activity to find the value of 'k'.

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`(-7)/(5)` is a root of the equadractic equation `5m^(2)+2m+k=0`.
Substitute `m=(-7)/(5)` in the given quadratic equation.
`: .5((-7)/(5))^(2)+2xx((-7)/(5))+k=0`
`:.(49)/(5)+((-14)/(5))+k=0`
`:.(7)+k=0`
`:.k=-7`
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NAVNEET PUBLICATION - MAHARASHTRA BOARD-QUADRATIC EQUATION -PRACTICE SET 2.1
  1. Write any two quadratic equations.

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  2. Decide which of the following are quadratic equations : x^(2)+5x-2...

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  3. Decide which of the following are quadratic equations : y^(2)=5y-1...

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  4. Decide which of the following are quadratic equations : y^(2)+(1)/...

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  5. Decide which of the following are quadratic equations : x+(1)/(x)=...

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  6. Decide which of the following are quadratic equations : (m+2)(m-5)...

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  7. Decide which of the following are quadratic equations : m^(3)+3m^(...

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  8. Write the following equatratic equations in the form ax^(2)+bx+c=0. Wr...

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  9. Write the following equatratic equations in the form ax^(2)+bx+c=0. Wr...

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  10. Write the following equatratic equations in the form ax^(2)+bx+c=0. Wr...

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  11. Write the following equatratic equations in the form ax^(2)+bx+c=0. Wr...

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  12. Write the following equatratic equations in the form ax^(2)+bx+c=0. Wr...

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  13. Write the following equatratic equations in the form ax^(2)+bx+c=0. Wr...

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  14. Determine whether the values given against each of the quadratic equat...

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  15. Determine whether the values given against each of the quadratic equat...

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  16. Find k if x=3 is a root of equation kx^(2)-10x+3=0.

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  17. One of the roots of equation 5m^(2)+2m+k=0 is -7/5. Complete the follo...

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