Question

find two numbers with sum 4 and product 2.
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Answer 1

Answer:

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1

2

3

4

5

Q. 2

5.0

( 1 Vote )

Find two numbers

Class 10th

Kerala Board Mathematics Part-1

4. Second Degree Equations

Answer

Let the numbers be x and y.

According to the question

x + y = 4

= y = 4 – x ---- (1)

xy = 2 ---- (2)

by (1) and (2)

x(4–x) = 2

4x – x2 = 2

x2 – 4x + 2 = 0

We can use the formula

x = 2 + √(2) , 2 – √(2)