计算,(x-3y)(x+3y)-(x-3y)^2112^2-113×111(2x-3)(x+4)
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/19 05:38:55
x
@1:!(D0Dbtp*F1z@xYfc7be psVP#[TNFS]lMEx89&Aփ1fIi(IM7EvN\Q<3g@_14F%C C.sDu'[ cg,\Siκj/re8}_0ŒSS^@oX*q TO
计算,(x-3y)(x+3y)-(x-3y)^2112^2-113×111(2x-3)(x+4)
计算,
(x-3y)(x+3y)-(x-3y)^2
112^2-113×111
(2x-3)(x+4)
计算,(x-3y)(x+3y)-(x-3y)^2112^2-113×111(2x-3)(x+4)
(x-3y)(x+3y)-(x-3y)^2
=x²-9y²-(x²-6xy+9y²)
=-18y²+6xy
112^2-113×111
=112²-(112+1)(112-1)
=112²-(112²-1²)
=1
(2x-3)(x+4)
=2x²+8x-3x-12
=2x²+5x-12
(x-3y)(x+3y)-(x-3y)^2
=(x-3y)(x+3y-x+3y)
=6y(x-3y)
112^2-113×111
=112^2-(112+1)×(112-1)
=112^2-(112^2-1)
=112^2-112^2+1
=1
(2x-3)(x+4)
=2x^2-3x+8x-12
=2x^2+5x-12
(x-3y)(x+3y)-(x-3y)^2
=x*2-9y^2-x^2+6xy-9Y^2
=-18y^2+6xy
112^2-113×111
=112^2-(112+1)(112-1)
=112^2-112^2+1
=1
(2x-3)(x+4)
=2x^2+5x-12
计算 x(x-3y)
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x
计算:(x+3y)(2x-y)
计算:(2x-3y)(x+y)
计算:(-x-2y) * (3x-y)
计算:(x+y)-3(x-2y).
计算:(x+3y)(x-3y)-(x-3y)
计算(x+y)(x+y)^2(-x-y)^3
3x(x-y)+2y(x-y) 计算
计算 3x+4y/x-y+3y/y-x-4x/x-y
计算:x+2y/x-y+2x/y-x-3y/x-y
计算(x+y)(x-y)(x+y)3次方(x-y)5次方计算(x+y)×(x-y)×(x+y)3次方×(x-y)5次方
计算n阶段行列式 请帮我解答:计算此3阶段行列式 | x y x+y| | y x+y x | |x+y x y || x y x+y || y x+y x | |x+y x y |
计算:x(x-3y)(5x-2y)
计算 x(x-3y)(x-5y)
计算(2x-3y)(x+4y)-(3x+y)(x-2y)(2x-3y)(x+4y)-(3x+y)(x-2y)
计算:y(x-y)^2+(y-x)^3=?
计算:y×(y/x)^3÷[-(x^2)/y]^-2