计算77^2+46*77+23^2=

问题描述:

计算77^2+46*77+23^2=

令x=77,y=23
所以原式=x^2+2xy+y^2
=(x+y)^2
所以原式=(77+23)^2
=100^2
=10000

77^2+46*77+23^2
=77^2+2*23*77+23^2
=(77+23)^2
=100^2
=10000

原式=77^2+2*23*77+23^2
=(77+23)^2
=100^2
=10000