Question

If
$(x + y) = 2 \: and \: (x - y) = 10$
find the values of
$a) \: (x {}^{2} + y {}^{2} ) \:$
$b) \: xy$
​

Answer 1

Answer:

the value is -3x

Step-by-step explanation:

first we have to multiply the n divide and then plus the quotient and remainder and then plus the both and anwers and then minus so your answer will be -3

Answer 2

Step-by-step explanation:

1) (x+y)^2=x^2+2xy+y^2=2^2(given)=4

(x-y)^2=x^2-2xy+y^2=10^2(given)=100

add em' up

2(x^2+y^2)=104

x^2+y^2=52

2) subtract them, 4xy= -96

xy= -24