3 years ago

If x+y = 3, xy =2 what is the value of x‌3+y3

Mathematics

2 answers:

weeeeeb [17]3 years ago

7 0

Answer:

X+y=3. X=3-y. X=3-y. (1)

X.y=2. Y.(3-y) =2. 3y-y^2=2 (2)

(2). -y^2+3y=2

0=Y^2-3y+2

Y=1. X=3-1. X=2

Y=2. X=3-2. X=1

Step-by-step explanation:

dimaraw [331]3 years ago

3 0

Answer:

- 18

Step-by-step explanation:

(x+y)^3=x^3+y^3+3xy(x+y)

By substituting values,

27-18=x^3+y^3

=》x^3+y^3=9

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If x+y = 3, xy =2 what is the value of x‌3+y3​

If x+y = 3, xy =2 what is the value of x‌3+y3