Question

find the value of x²+y²When x+ y = 9 and X-Y=3.​

Answer 1

Answer:

45

Step-by-step explanation:

X + Y = 9

X - Y = 3

solving these 2 we get

2X = 12

X = 6

X + Y = 9

Y = 9 - X = 9 - 6 = 3

Y = 3

X^2 + Y^2 = 6^2 + 3^2 = 36 + 9 = 45

x²+y² = 45