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ahrayia [7]
3 years ago
13

What does the fundamental theorem of algebra state about the equation 2x^2−6x+10=0 ?

Mathematics
1 answer:
Temka [501]3 years ago
5 0

Answer:

B. The fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. The roots are ​ x=3±i√11/2 .  

Step-by-step explanation:

We know that,

Fundamental theorem of algebra states that ' a polynomial of degree n will have n number of roots'.

Since, the polynomial y=2x^{2}-6x+10 has degree 2, so it will have 2 roots.

We know that the polynomial ax^{2}+bx+c=0 has roots given by x=\frac{-b \pm \sqrt{b^{2}-4ac}}{2a}.

So, the roots of polynomial 2x^{2}-6x+10=0 will be,

x=\frac{6 \pm \sqrt{(-6)^{2}-4 \times 2 \times 10}}{2 \times 2}

i.e. x=\frac{6 \pm \sqrt{36-80}}{4}

i.e. x=\frac{6 \pm \sqrt{-44}}{4}

i.e. x=\frac{6 \pm 2i \sqrt{11}}{4}

i.e. x=3 \pm \frac{\sqrt{11}i}{2}

Hence, the roots are given by 3 \pm \frac{\sqrt{11}i}{2}

So, option B is correct.

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