Question

9. If x - y = 12 and xy = 6 ( 1 4 find x + y.​

Answer 1

Answer:

144

Step-by-step explanation:

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

(12)^2=x^2+y^2-2×6

144=x^2+y^2-12

144+12=x^2+y^2

156=x^2+y^2

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

156=12(x+y)

X+Y=144