Question

the value
Q. If x+y=10 and a.
x-y=4, find
of x². y ²

Answer 1

Answer:

Given that: x−y=3 And xy = 10

Using the given identity: (a−b)

2

= a

2

−2ab+b

2

So, (x−y)

2

= x

2

−2xy+y

2

⇒ (x−y)

2

= x

2

−2(10)+y

2

⇒ (3)

2

= x

2

−20+y

2

⇒ 9 = x

2

+y

2

−20

⇒ 9+20 =x

2

+y

2

⇒ x

2

+y

2

= 29

The correct answer is x

2

+y

2

=29

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

X + Y= 10

X - Y = 4

---------------

2X = 14

X = 7

7+Y =10

Y = 3

x^2 + y^2 = 7^2 + 3^2

= 49 + 9

= 55.