Question

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

Answer 1

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