2X³+7XY-4 =/DENGAN X=-2 Y=-3​

Penjelasan dengan langkah-langkah:

dik, x = – 2

y = – 3

sehingga,

2x³ + 7xy – 4 = …

= 2(-2)³ + 7(-2)(-3) – 4

= 2(-8) + 7(6) – 4

= -16 + 42 – 4

= – 20 + 42

= 22