Answer:
f-1(1)= (0,1.......bbbbbbbbbbbb
If you want the answer youse a calculator or do 21 divided by 38
Answer:
f(x) = (x + 6)(x – 2)
Step-by-step explanation:
The roots of a polynomial are the solutions to its factors. This means you can set the factors equal to 0 and the roots are the solution. Working backwards, if the roots are x = -6 and x = 2 then they must have resulted from factors x + 6 and x - 2. This is true since x + 6 = 0 has solution x = -6. And x-2 = 0 has solution x = 2.
So the polynomial has factors (x+6)(x-2). The solution is f(x) = (x + 6)(x – 2).
Answer:
Your given polynomial has only one real root which is x= -4
Step-by-step explanation:
find any zero of the polynomial.
x-a divides the polynomial where a is a zero of polynomial:
So x+4 divides ![2x^{3} +2x^{2} -19x+20](https://tex.z-dn.net/?f=2x%5E%7B3%7D%20%2B2x%5E%7B2%7D%20-19x%2B20)
If we factor out a two, we can use the quadratic formula.
2(x^2-3x+2.5) so we have x = (-(-3)+/-(9-4*1*2.5)^(1/2))/2*1)=(3+i) or (3-i)/2 .
Final answer:
![2x^{3} +2x^{2} -19x+20=0](https://tex.z-dn.net/?f=2x%5E%7B3%7D%20%2B2x%5E%7B2%7D%20-19x%2B20%3D0)
then x=-4, (3+i)/2, or (3-i)/2
Answer:
5x = 90+15
x = 21
Step-by-step explanation:
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