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Find the roots of the polynomial equation.
2x^3 + 2x^2 – 19x + 20 = 0
 one year ago
 one year ago
Find the roots of the polynomial equation. 2x^3 + 2x^2 – 19x + 20 = 0
 one year ago
 one year ago

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2x^3 + 2x^2 – 19x + 20 = 0, it can be factored (x+4)(2x^26x+5) = 0 for zeros, x+4=0 > x=4 2x^26x+5=0 use the formula quadratic : x1,2 = (b+sqrt(b^24ac))/2a x1,2 = (6+sqrt(364*2*5))/2*2 x1,2 = (6+sqrt(3640))/4 x1,2 = (6+sqrt(4))/4 x1,2 = (6+2i)/4 x1,2 = 6/4 + i/2 x1,2 = 3/2 + i/2
 one year ago
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