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gladu [14]
2 years ago
15

Can someone help me with these two problems please?

Mathematics
1 answer:
kicyunya [14]2 years ago
5 0

Answer:

b

j

................................

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Please help !!! What’s the answer to this??
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2 years ago
What are the roots of the polynomial equation x cubed minus 5 x + 5 = 2 x squared minus 5?
Dennis_Churaev [7]

Roots of the polynomial x^3-5x+5=2x^2-5 are x=\sqrt{5},x=-\sqrt{5}\,\,and\,\,x=2

Step-by-step explanation:

We need to find roots of the polynomial equation: x^3-5x+5=2x^2-5

Solving the polynomial to find roots:

x^3-5x+5=2x^2-5\\Rearranging:\\x^3-5x+5-2x^2+5=0\\x^3-2x^2-5x+10=0

Finding factors by grouping:

(x^3-2x^2)(-5x+10)=0\\Finding\,\,common\,\,terms:\\x^2(x-2)-5(x-2)=0\\(x^2-5)(x-2)=0\\x^2-5=0\,\,and\,\,x-2=0\\x^2=5\,\,and\,\,x=2\\x=\pm \sqrt{5}\,\,and\,\,x=2

So, roots of the polynomial x^3-5x+5=2x^2-5 are x=\sqrt{5},x=-\sqrt{5}\,\,and\,\,x=2

Keywords: Roots of Polynomial

Learn more about Roots of Polynomial at:

  • brainly.com/question/2568692
  • brainly.com/question/1464739
  • brainly.com/question/1332667
  • brainly.com/question/2364381

#learnwithBrainly

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3 years ago
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