x-y=13,xy=30 find x+y
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x-y = 13
(x-y)^2= 13^2
sq. x + sq. y- 2xy = 169
sq. x + sq. y = 169 + 60 = 229
(x+y)^2=sq. x+sq.y+2xy =229 +60 = 289
x+y = √289
(x-y)^2= 13^2
sq. x + sq. y- 2xy = 169
sq. x + sq. y = 169 + 60 = 229
(x+y)^2=sq. x+sq.y+2xy =229 +60 = 289
x+y = √289
vishalpanda200p813cl:
sq.x+sq.y+2xy=229
sq.x+sq.y=220-2xy
given xy =30
x+y=√229-60
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