anonymous
  • anonymous
Find the roots for the polynomial y = x(x + 1)(x – 3)(x – 2√2)(x + 2√2). A. 0, 1, –3 B. 0, –1, 3, –2√2, 2√2 C. –1, 3, –2√2, 2√2 D. 0, 1, –3, –2√2, 2√2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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campbell_st
  • campbell_st
well set each factor to zero and solve x = 0 x + 1 = 0 x - 3 = 0 etc solve for x this will give the roots of the polynomial
anonymous
  • anonymous
so A ?
campbell_st
  • campbell_st
well you have 2 more to solve... there are 5 roots...

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anonymous
  • anonymous
oh. i guess i dont understand it then
campbell_st
  • campbell_st
ok... your polynomial is in factored form so is any of the factors are equal to zero the who polynomial will equal zero. so to find the zeros you need to left each factor equal zero and solve for the value of x that makes it zero. so you are solving x = 0 x + 1 = 0 x - 3 = 0 \[x - 2 \sqrt{2} = 0\] and \[x + 2 \sqrt{2} = 0\] if you solve for x, you are finding where the polynomial cuts the x- axis

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