If x+y=15 and x-y=25, then what is the value of 2x^2 - y^2?
a) 425
b) 775
c) 825<...
Mathematics, 17.09.2019 20:50, HealTheWorld
If x+y=15 and x-y=25, then what is the value of 2x^2 - y^2?
a) 425
b) 775
c) 825
d) 1,575
e) 1,625
Answers: 2
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