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Ask QuestionPosted by Krishan Kadian Kadian 5 years, 4 months ago
- 2 answers
Yogita Ingle 5 years, 4 months ago
2x2 -5x + 3
= 2x2 - 2x -3 x + 3
= 2x(x - 1) - 3 ( x - 1)
= (x -1) (2x - 3)
Posted by Yogesh Meena 5 years, 4 months ago
- 1 answers
Gaurav Seth 5 years, 4 months ago
Question : Find the series if an=9−5n
Given
an=9−5n
a1=9−5=4
a2=9−10=−1
a3=9−15=−6
∴ The series is 4,−1,−6,−11....
Posted by Elizabeth Mary 5 years, 4 months ago
- 2 answers
Gaurav Seth 5 years, 4 months ago
Let’s assume the two numbers be x and y. And also assume that x is greater than or equal to y.
So as per the question, we can write the sum of the two numbers as
x + y = 1000 ……….. (i)
Again it’s given that, the difference between the squares of the two numbers, thus writing it
x2 – y2 = 256000
⇒ (x + y) (x – y) = 256000
⇒ 1000(x - y) = 256000
⇒ x – y = 256000/1000
⇒ x – y = 256 ………….. (ii)
By solving (i) and (ii), we can find the two numbers
On adding the equations (i) and (ii), we get;
(x + y) + (x - y) = 1000 + 256
⇒ x + y + x – y =1256
⇒ 2x = 1256
⇒ x = 1256/ 2
⇒ x = 628
Now, putting the value of x in equation (i), we get
628 + y =1000
⇒ y = 1000 – 628
⇒ y = 372
Hence, the two required numbers are 628 and 372.
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Yogita Ingle 5 years, 4 months ago
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Nikita??? Garg 5 years, 4 months ago
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