Question

what is x if y=2 and xy=4

Answer 1

Hey there,

Answer:

(x+y)2=4

Explanation:

(x+y)2=x2+2xy+y2

(x+y)2=x2+y2+2xy

using the values given:

(x+y)2=12+2×(−4)

(x+y)2=12−8=4

Hope this helps!

Answer 2

Hi there,
Given,
y= 2

xy = 4

(x+y)2= 12+2*(-4)

(x+y)2=12-8=4

(answer)

Hope this helps.