Question

find the value of x³-y³ if (X-y) = -7 and xy = -10​

Answer 1

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Answer:

${(x - y})^{3} = (- {7})^{3}$

${x}^{3} - {y}^{3} - 3xy(x - y) = - 343$

${x}^{3} - {y}^{3} - 3 \times - 10 \times - 7 = - 343$

${x}^{3} - {y}^{3} = - 343 + 210$

${x}^{3} - {y}^{3} = - 133$

Answer 2

Answer:

-133

Step-by-step explanation:

the sum is solved in the image