Find the sum of the roots of the equation -5y2- 4-5y- 10 - 0

The correct option is B 4Given #160;expression is: √(5)y^2 #160; 4√(5)y 10 = 0 #160;Sum #160;of the roots = α + β = b/a = #16 ...

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Standard X

Mathematics

Sum and Product of Roots of a Quadratic Equation

Find the sum ...

Question

Find the sum of the roots of the equation $\sqrt{5} y^{2} - 4 \sqrt{5} y - 10 = 0$

\frac{\sqrt{5}}{2}

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\frac{4}{5}

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\frac{3}{10}

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Solution

The correct option is B 4
Given expression is:
$\sqrt{5} y^{2} - 4 \sqrt{5} y$ - 10 = 0
Sum of the roots = $α + β = \frac{- b}{a} = \frac{- (- 4 \sqrt{5})}{\sqrt{5}} = 4$

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Find the sum of the roots of the equation √5y2−4√5y−10=0

The correct option is B 4Given expression is:√5y2−4√5y - 10 = 0 Sum of the roots = α+β=−ba=−(−4√5)√5=4

Find the sum of the roots of the equation $\sqrt{5} y^{2} - 4 \sqrt{5} y - 10 = 0$

The correct option is B 4
Given expression is:
$\sqrt{5} y^{2} - 4 \sqrt{5} y$ - 10 = 0
Sum of the roots = $α + β = \frac{- b}{a} = \frac{- (- 4 \sqrt{5})}{\sqrt{5}} = 4$