2 years ago

Help Plz!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

kari74 [83]2 years ago

7 0

-4 x -4 x -4= -64
Z = -4

solniwko [45]2 years ago

5 0

Just get the cube root and solve.

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kirill [66]

Answer:

$x=1+\sqrt{5}, 1-\sqrt{5}$

Step-by-step explanation:

$x^{2} -2x-4=0$
$(x-1)^{2} -1-4=0$
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$(x-1)^{2} =5$
$x-1=\sqrt{5} ,-\sqrt{5}$
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FINAL ANSWER

$x=1+\sqrt{5} , 1-\sqrt{5}$

In Decimal Form (Rounded to 3 significant figures)

x≈-1.24, 3.24

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