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Brrunno [24]
2 years ago
15

X² – 2x=4

Mathematics
1 answer:
Shtirlitz [24]2 years ago
3 0

Answer:

x= -1.24, 3.24

Step-by-step explanation:

x² – 2x=4

Bring 4 over

x² – 2x - 4=0

Quadratic formula:

if ax²+bx+c=0

\frac{b(+-)\sqrt{b^2-4ac} }{2a} the (+-) = ±

\frac{-(-2)+\sqrt{(-2)^2-4*1*(-4)} }{2*1}= 3.24

\frac{-(-2)-\sqrt{(-2)^2-4*1*(-4)} }{2*1}= -1.24

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