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3 years ago

Which equations have no real solution but have two complex solutions?

Mathematics

2 answers:

Sidana [21]3 years ago

6 0

Answer:

Since we cannot find the square root of a negative number (at least not using the real number system), we cannot evaluate the formula any further. There will be no solutions. Use the discriminant to determine whether the quadratic equation has two, one, or no solutions. The result is a negative number. i really hope this helps u. good luck my dude

Sphinxa [80]3 years ago

5 0

Answer:

equations have no real solution but have two complex solutions When discriminant is negative.

Step-by-step explanation:

The quadratic equation ha 2 solution

let a, b and c are the coefficients of equation.

These 2 solutions are based on the value of discriminant,

<u>discriminant = square root (b^2 - 4ac) </u>

If b^2 - 4ac is a negative value we cannot find its root.

The square root of a negative number is complex number.

Therefore equations have no real solution but have two complex solutions

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Use complete sentences to describe the relationship between sets A and B if A ⊆ B.

asambeis [7]

Answer:

b includes a in it this is a full sentense

8 0

2 years ago

8/x-5 - 9/x-4 = 5/x^2-9x+20

adelina 88 [10]

If you're using the app, try seeing this answer through your browser: brainly.com/question/2752942

_______________

Solve the equation:

$\mathsf{\dfrac{8}{x-5}-\dfrac{9}{x-4}=\dfrac{5}{x^2-9x+20}\qquad\qquad(x\ne 5~and~x\ne 4)}$

Reduce the fractions at the left side so that they have the same denominator:

$\mathsf{\dfrac{8(x-4)}{(x-5)(x-4)}-\dfrac{9(x-5)}{(x-4)(x-5)}=\dfrac{5}{x^2-9x+20}}\\\\\\
\mathsf{\dfrac{8x-32}{x^2-4x-5x+20}-\dfrac{9x-45}{x^2-4x-5x+20}=\dfrac{5}{x^2-9x+20}}\\\\\\
\mathsf{\dfrac{8x-32}{x^2-9x+20}-\dfrac{9x-45}{x^2-9x+20}=\dfrac{5}{x^2-9x+20}}\\\\\\
\mathsf{\dfrac{8x-32-(9x-45)}{x^2-9x+20}=\dfrac{5}{x^2-9x+20}}$

Numerators must be equal:

$\mathsf{8x-32-(9x-45)=5}\\\\
\mathsf{8x-32-9x+45=5}\\\\
\mathsf{8x-9x=5+32-45}\\\\
\mathsf{-x=-8}\\\\
\mathsf{x=8}\quad\longleftarrow\quad\textsf{this is the solution.}$

I hope this helps. =)

Tags: <em>rational equation fraction solution algebra</em>

7 0

2 years ago

Please i need help asap!!

chubhunter [2.5K]

Answer:

(-4,-1) is the answer to this.

7 0

2 years ago

What is 2.23x3.42x6.42

Sergio039 [100]

Answer:

48.96

Step-by-step explanation:

Perform the two multiplications from left to right:

2.23x3.42x6.42 becomes:

7.6266 · 6.42, or

48.96

7 0

2 years ago

Read 2 more answers

A photo is 8cm and 12cm long. The length and width are increased by an equal amount in order to double the area of the photo. Wh

OverLord2011 [107]

8 x 12=96cm^2
Double 96 = 192cm^2
8+4=12
12+4=16
16 x 12=192cm^2
Increase is 4cm

3 0

3 years ago