Question

Solve the pair of equation x+y=14andx-y=4and find +2xy)

Answer 1

Step-by-step explanation:

x+y=14------1

x-y=4--------2

------------------------

2x=18

x=9

x+y=14

y=14-9

y=5

2xy= 2×9×5

=90

mark it as brilliant answer