X-4XY+4Y²=()²1-8X+16X²=()²(1/2X-3Y)²=(3m-2n)²=4m²-4mn+n²=()²3x²-7x+2=(
问题描述:
X-4XY+4Y²=( )²
1-8X+16X²=( )²
(1/2X-3Y)²=
(3m-2n)²=
4m²-4mn+n²=( )²
3x²-7x+2=( )( )
答
解
x²-4xy+4y²=(x-2y)²
1-8x+16x²=(1-4x)²
(1/2x-3y)²=1/4x²-3xy+9y²
(3m-2n)²=9m²-12mn+4n²
4m²-4mn+n²=(2m-n)²
3x²-7x+2=(3x-1)(x-2)