Question

FACTORISE:

x^2-5x-2



pls send ​

Answer 1

Step-by-step explanation:

This question can't be factorised so you have to use quadratic formula here..

Quadratic Formula : -b +or- √b²-4ac

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2a

= -(-5) +or- √(-5)²-4(1)(-2)

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2(1)

= 5 +or- √25-8

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2

= 5+√17 5-√17

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2 2

Answer 2

Answer:

Question :-

Factorise :-

x^2 - 5x - 2 = 0

Required Answer :-

x^2 - 5x - 2 = 0

comparing with ax^2 + bx + c = 0,

a = 1,b = - 5, c = - 2

b^2 - 4ac = (-5)^2 - 4(1)(-2)

= 25 + 8

= 33

$x \: = \frac{ - \: b \: \: + - \: \sqrt{b {}^{2} \: - \: \: 4ac } }{2a}$

$x \: = \: \frac{ \: - ( - 5) \: + - \: \sqrt{33} }{2(1)}$

$x \: = \: \frac {5 + - \sqrt{} 33}{2}$

hope it help you

$x \: = \frac{5 \: + \sqrt{} 33} {2} \: or \: x \: = \frac{5 - \sqrt{} 33}{2}$