Question

X+y =-42and xy =441 then find x and y

Answer 1

Step-by-step explanation:

x+y=(-42)

(-21) + (-21) = (-42)

xy=441

(-21)*(-21)=441

Hope it helps!!

Answer 2

$\huge\bf\underline\red{Solution:-}$

Given,

x + y = -42 ----------------- eq 1

xy = 441

To find x,y

We know that (x+y)²=x²+y²+2xy

(-42)² = x² + y² + 2(441)

1764 = x²+y²+882

1764-882 = x²+y²

882 = x²+y²

From this we can find (x-y)²

x²+y²-2xy=(x-y)²

882-2(441)=(x-y)²

0=(x-y)²

(x-y) =0 -----------------eq 2

x+y = -42

x-y = 0

_______

2x= -42

________

x= -21

Substuite in eq 1

-21+ y = -42

y = -21

There for2 required values of x,y are -21,-21

$\huge\bf\underline\pink{Hope u helpful}$