128^2+128*144+72^2 = = 要求用公式法分解.
问题描述:
128^2+128*144+72^2 = = 要求用公式法分解.
答
128^2+128*144+72^2
=128^2+2*128*72+72^2
=(128+72)^2
=200^2
=40000
答
128^2+128*144+72^2 = (128+72)^2=40000
答
128^2+128*144+72^2
=128^2+2x128x72+72^2
=(128+72)^2
=200^2
=40000