Question

The value of 7³ + 8³ - 15³ is (this chapters name is polinomial)

Answer 1

#AlexaRousey here!!

= (7)^3 + (8)^3 + (-15)^3

Since 7+8+(-15) = 0
According to identity if a+b+c = 0;

Then a^3 + b^3 + c^3 = 3abc

= (7)^3 + (8)^3 + (-15)^3

= 3(7)(8)(-15)

= - 2,520

Thanks!!