Question

x2+5x-2 solve by formula method

Answer 1

Answer:

Step-by-step explanation:

As we have given the equation in the question that x²+5x-2 =0

As we compared the above equation with the standard quadratic equation ax²+bx+c=0 then we get

a=1

b=5

c= -2

So

Answer 2

The values of x are -5.37 and 0.372.

Step-by-step explanation:

The general form of quadratic equation is given by :

$ax^2+bx+c$

The solution of this equation is given by :

$x=\dfrac{-b\pm \sqrt{b^2-4ac} }{2a}$

The given equation is $x^2+5x-2$

We have, a = 1, b = 5 and c = -2

Plugging in the above formula such that,

$x=\dfrac{-5+\sqrt{(5)^2-4\times 1\times (-2)} }{2}, \dfrac{-5-\sqrt{(5)^2-4\times 1\times (-2)} }{2}\\\\x=0.372, -5.37$

So, the values of x are -5.37 and 0.372.

Learn more,

Quadratic equation

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