Question

please answer maths ​

Answer 1

x+y=2

xy=1

this meant that value of x=1 and y=1

because x+y=2

1+1=2

xy=1

1×1=1

Hence

x^4+y^4

=1×1×1×1+1×1×1×1

=2

Answer 2

Answer:

Step-by-step explanation:

x+y=2, xy=1  

(x+y)²=x²+y²+2xy

2²=x²+y²+2*1

4=x²+y²+2

x²+y²=4-2

x²+y²=2

now,

(xy)²=1²=1

(x²+y²)²=x⁴+y⁴+2x²y²

2²=x⁴+y⁴+2*1

4=x⁴+y⁴+2

x⁴+y⁴=2