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Factorisation

x2-5x+5 then ...

Question

$(x^{2} - 5 x + 5)$ then find the addition of this equation seed?

5

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Solution

The correct option is A $5$
The standard quadratic equation is $a x^{2} + b x + c = 0$
As we know that,
Sum of roots $= - \frac{b}{a}$
Given
$x^{2} - 5 x + 5$
Here, $a = 1, b = - 5, c = 5$

Therefore,
Sum of roots $= - \frac{- 5}{1} = - (- 5) = 5$

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Similar questions

x^{2} - 5 x + 6 = 0

x^{2} - 5 x + 6 = 0

Find and correct the errors in the following mathematical statement. Substituting x = −3 in

(a) x² + 5x + 4 gives (−3)² + 5 (−3) + 4 = 9 + 2 + 4 = 15

(b) x² − 5x + 4 gives (−3)² − 5 (−3) + 4 = 9 − 15 + 4 = −2

6 x^{2} - 13 x + 6 = 0

\sqrt{6} x^{2} - 5 x + \sqrt{6} = 0

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x^{2} + 2 x + 4 = 0

x^{2} + x + 1 = 0

x^{2} - 3 \sqrt{3} x - 30 = 0

x = - 3

x^{2} + 5 x + 4

(- 3)^{2} + 5 (- 3) + 4 = 9 + 2 + 4 = 15

x^{2} - 5 x + 4

(- 3)^{2} - 5 (- 3) + 4 = 9 - 15 + 4 = - 2

x^{2} + 5 x

(- 3)^{2} + 5 (- 3) = - 9 - 15 = - 24

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