Question

If x+y=13 and xy=42 find the value of x³+y³

Answer 1

Answer:

THE ANSWER OF THE FOLLOWING QUESTION IS 559

Step-by-step explanation:

The Formula of

$x {}^{3} + y {}^{3 } = (x + y) {}^{3} - 3xy(x + y)$

Now in the question The values of both X+Y and XY are given

therefore,

RHS=

$(13) {}^{3} - 3 \times 42(13)$

=559