6x²-6xy-8x+8y при x=-4, y=2

Question

6x²-6xy-8x+8y при x=-4, y=2

Answer 1

6*(-4)²-6*(-4)*2-8*(-4)+8*2=6*16-6*(-4)*2-8*(-4)+8*2=96-(-48)-(-32)+16=96+48+32=96+80=176