Question

if x+y=8 and xy=15, then find the value of x^4+x^2y^2+y^4​

Answer 1

Answer:

X+ y =15

8+8=15

16=15

it is not correct

Answer 2

◙ Given ◙

x + y = 8 et xy = 15.

◙ To find ◙

The value of x⁴ + x²y² + y⁴.

◙ Solution ◙

We know,

x⁴ + x²y² + y⁴ = (x² + y²)²

= [(x + y)² - 2xy]²

= [(8)² - 2(15)]²

= (64 - 30)²

= 34²

= 1156