Question

If x+y=25 and x^(2)+y^(2)=225. find xy

Answer 1

Answer:

Given,

x + y = 25

Now,

x^2 + y^2 = 225

✔ x^2 + y^2 + 2xy - 2xy = 225

✔ (x + y) ^2 - 2xy = 225

✔ 25^2 - 2xy = 225

✔ 625 - 2xy = 225

✔ 625 - 225 = 2xy

✔ 400 = 2xy

✔ xy = 400/2

✔ xy = 200

〰〰〰〰

Hope it helps...

Follow me ❤

Answer 2

Answer:

Step-by-step explanation:

(x + y)² = 625

x² + y² = 225

x² + y² + 2xy = 625

2xy = 400

xy = 200