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The roots of the equations x2 + 2x - 35 = 0 are
1. -5 and -7
2. 5 and 7
3. -5 and 7
4. 5 and -7
5. None of these

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Correct Answer - Option 4 : 5 and -7

Calculation:

Given equations x2 + 2x - 35 = 0 

To Find: Roots of the equation

x2 + 2x - 35 = 0 

⇒ x2 + 7x - 5x - 35 = 0

⇒ x (x + 7) - 5 (x + 7) = 0

⇒ (x - 5) (x + 7) = 0

So, (x - 5) = 0 and (x + 7) = 0

∴ x = 5 and -7

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