f(x 1)=8x 7AD BE CF=(AB BC CA) (BC/2 CA/2 AB/2)
问题描述:
f(x 1)=8x 7AD BE CF=(AB BC CA) (BC/2 CA/2 AB/2)
abs(x) abs(y)
答
a3 2a2b ab2-2a2b-ab2 b3A当a=3时A×B=,对比A=2×2×3×5×7,B=2×3×3×5×7对比a3 2a2b ab2-2a2b-ab2 b3