Sums of Roots of Equations

Submitted by ladislav.foltyn on Mon, 02/18/2019 - 10:57
Project ID: 
6000000017
Accepted: 
SubArea: 
Quadratic equations and inequalities
Type: 
Match
Layout: 
6x6
Question: 
Match the equations with sums of their roots.
Questions Title: 
Equations
Answers Title: 
Sums of roots
Question 1: 
\( \frac{x^2-1}{x-1}=0 \)
Answer 1: 

\( -1 \)

Question 2: 
\( 5x^2-2=0 \)
Answer 2: 

\( 0 \)

Question 3: 
\( \frac{x+3}{x-5} = \frac{x+5}{x-3} \)
Answer 3: 

{The equation has no roots, so the~sum of roots does not exist.}

Question 4: 
\( \frac{x^2-8x+15}{x-3}=3 \)
Answer 4: 

\( 8 \)

Question 5: 
\( \frac{x^2+x-6}{x^2-2x-15}=4 \)
Answer 5: 

\( 6 \)

Question 6: 
\( -2x^2+8x-4=0 \)
Answer 6: 

\( 4 \)

Tex: 
% tiket 32784 \NastavOD{2}