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diamong [38]
3 years ago
5

Please help anyone know how to do this.

Mathematics
2 answers:
Mademuasel [1]3 years ago
7 0

Answer:

Pythagoras theorem states a^2 + b^2 = c^2  

(The two smallest sides squared will make the hypotenuse squared)

a, b and c are sides of triangle

Answer is option 3

Step-by-step explanation:

dexar [7]3 years ago
6 0

sides of right angle triangle follows Pythagoras theorem

a^2 + b^2 = c^2

where a, b and c are sides of triangle

if you check, option 3 follow this. so answer is option 3

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according to the fundamental theorem of algebra how many roots exits for the polynomial function. f(x)=8x^7-x^5+x^3+6
algol13

Answer:

The Fundamental Theorem of Algebra (FTOA) tells us that any non-zero polynomial in one variable with complex (possibly real) coefficients has a complex zero.

A straightforward corollary, often stated as part of the FTOA is that a polynomial in a single variable of degree  

n

>

0

with complex (possibly real) coefficients has exactly  

n

complex (possibly real) zeros, counting multiplicity.

To see that the corollary follows, note that if  

f

(

x

)

is a polynomial of degree  

n

>

0

and  

f

(

a

)

=

0

, then  

(

x

−

a

)

is a factor of  

f

(

x

)

and  

f

(

x

)

x

−

a

is a polynomial of degree  

n

−

1

. So repeatedly applying the FTOA, we find that  

f

(

x

)

has exactly  

n

complex zeros counting multiplicity.

Discriminants

If you want to know how many real roots a polynomial with real coefficients has, then you might like to look at the discriminant - especially if the polynomial is a quadratic or cubic. Ths discriminant gives less information for polynomials of higher degree.

The discriminant of a quadratic  

a

x

2

+

b

x

+

c

is given by the formula:

Δ

=

b

2

−

4

a

c

Then:

Δ

>

0

indicates that the quadratic has two distinct real zeros.

Δ

=

0

indicates that the quadratic has one real zero of multiplicity two (i.e. a repeated zero).

Δ

<

0

indicates that the quadratic has no real zeros. It has a complex conjugate pair of non-real zeros.

The discriminant of a cubic  

a

x

3

+

b

x

2

+

c

x

+

d

is given by the formula:

Δ

=

b

2

c

2

−

4

a

c

3

−

4

b

3

d

−

27

a

2

d

2

+

18

a

b

c

d

Then:

Δ

>

0

indicates that the cubic has three distinct real zeros.

Δ

=

0

indicates that the cubic has either one real zero of multiplicity  

3

or one real zero of multiplicity  

2

and another real zero.

Δ

<

0

indicates that the cubic has one real zero and a complex conjugate pair of non-real zeros.

Step-by-step explanation:


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