Question

if x=2,y=9 and xy=7 find the value x+4y

Answer 1

x=2,y=9
then x+4y
=2+4×9
=2+36
=38

Answer 2

This is the answer of your question
Given X=2,Y=9,XY=7
if the question is x+4y
=2+4*9
=2+36
=38
if the question is (x+4y)^2
=x2+y2+2xy
=(2)^2+(9)^2+2*7
=4+81+14
=18+81
=99
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