Which of the following equations has a root in common with
x2 - 6x + 5 = 0?
Answers were Sorted based on User's Feedback
Answer / siheng
the question was lifted from the SAT test prep source
the choices given were
A) x^2 + 1 = 0
B) x^2 - x - 2 = 0
C) x^2 - 10x - 5 = 0
D) 2x^2 - 2 = 0
E) x^2 - 2x - 3 = 0
the roots are 5, 1
but which of the following equations, a, b, c, d or e has a
root in common with x^2 - 6x + 5
the answer is D) 2x^2 -2 = 0
this is because when factored, the equation becomes
2(x^2 - 1) = 0
and the root of the equation therefore is
x^2 - 1 = 0
x^2 = 1
x = 1 ^1/2
x = 1 (since the square root of 1 is 1), which is common
with x^2 - 6x + 5
Is This Answer Correct ? | 5 Yes | 1 No |
x2 -6x +5 =0
(since -5*-1=5 and their sum =-6)
(x-5) (x-1)=0
x=5,1
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / guest
x2-6x+5=0
so,
x2-6x+5=(x-1)(x-5)=0
x-1=0;x-5=0
x=1, x=5
Is This Answer Correct ? | 2 Yes | 3 No |
Answer / mohan
2x^2-12x+10
roots are 1,5,.common root with the given eqn
Is This Answer Correct ? | 0 Yes | 2 No |
vernanlar : place :: finger print : ?
computer can be written as 04p14q22u06s. then how software can be written?
If a clock takes 7seconds to strike 7, how long will the same clock take to strike 10?
Find the Series number: 0,2,3,5,8,10,15,17,24,26,..
WRITE A LEAVE LETTER TO YOUR MANAGER
when chlorine gas is leak out what will you do?
an orange galss has orange juice. and white glass has apple juice. Bothe equal volume 50ml of the orange juice is taken and poured into the apple juice. 50ml from the white glass is poured into the orange glass. Of the two quantities, the amount of apple juice in the orange glass and the amount of orange juice in the white glass, which one is greater and by how much?
For 1:2:4 ratios the weight of cement is 50 kg then how many kg are the weight of sand and aggregate?
In a survey of town of Wasco, it was found that 65% of the people surveyed watched the news on television, 40% read newspaper, and 25% read a newspaper and watched the news on television. What percent of the people surveyed neither watched the news on the television nor read a newspaper?.
Machines X & Machine Y produces 8000 articles in 4 and 8 hrs respectively. If they work alternately for one hr each, X starting first, in what time 10000 articles can be produced?
George while driving along the highway saw road markers which are at equal distances from each other. He crosses the markers every 20 seconds. If he increases his speed by x meters per second, he crosses the markers at every 15 seconds. But if he increases his speed by y meters per second, he crosses the marker at every 10th second. If y-x = 40 meters per second, then what is the distance between two markers.
hi i am going to write SBI Technical Executives entrance exam.pls help me out in clearing thisexam.kindly proivde me the question papers..