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If x=2x^2-3xy+4y
y=x^2+2xy-3y^2
z=-4x^2+5xy+y^2
Find x+y+z

By Anna

If x=2x^2-3xy+4y
y=x^2+2xy-3y^2
z=-4x^2+5xy+y^2
Find x+y+z

About the author
Anna

what is the probability of getting prime number while rolling a dice once? *
a) 1/2
b)3/4
c) 1/6
d)3/5

If P is principal, R is rate percent , T is time period and I is simple intrest then formula for finding R?​

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