Question

The value of x^2 + y^2 if x-y =3/2 and x*y=1/2​

Answer 1

Answer:

(x-y)^2=x^2+y^2+2xy

(2/3)^2+2*1/2=x^2+y^2

4/9+1=13/9

c is right

Answer 2

Answer:

$x - y = \frac{3}{2}$

${(x - y)}^{2} = \frac{9}{4}$

${x}^{2} + {y}^{2} - 2xy = \frac{9}{4}$

${x}^{2} + {y}^{2} = \frac{9}{4} + 2 \times \frac{1}{2}$

$= \frac{13}{4}$