Question

si: x+y = 1 dar el valor de la expresión:
$p = 3(x { }^{2} + y ^{2}) - 2(x {}^{3} + y {}^{3} )$

Answer 1

p = 3 (x² + y²) - 2 (x³ + y³)

p = 3 (x + y)² - 2 (x + y)³

p = 3 x 1² - 2 x 1³

p = 3 - 2

p = 1