擅长因式分解的高手帮下忙.
擅长因式分解的高手帮下忙.
-9x²y+3xyz
x(y-z)-y(z-y)
81x四次方-y的四次方
m²+7m-18
(x+y)²+2(y+x)+1
121(a-b)²-169(a+b)²
5x²+6xy-8y²
-a³-4a²+12a
(a²+4)²-16a²
4x²(a-b)+16y²(b-a)
(x+1)(x+3)+1
(x+y)²-4(x+y-1)
计算.(-3)º+(-1/2)的-2次方÷2
3x²×(-3xy)²+(-2x)³×xy²
4(a-b)²-(2a+b)(-b+2a)
(x+y+2z)²
(a+2b-3c)(a-2b+3c)
(x+2y)(x-2y)-(x+2y)²+8y²
(x+2y-3/2)(X+2y+3/2)
4-(a+2)(a-2)
(x²+y)(x²-y)-(-x²)×(-x²)
(a+1)(4a-1)-(2a+1)(2a-1)
(a-2)(a+2)(a²+4)
(3m²+5)(-3m²+5)-m²(7m+4)(7m-4)-16m²
简化,求值(2a-b)(b+2a)(b²+4a²).a=-1,b=-2
已知(a+b)²=9,(a-b)²=49.a²+b²= ,ab=
解方程4(x-2)(x+5)-(2x-3)(2x+1)=5
求2六次方+2的五次方+2的四次方+2³+2²+2+1的值和过程
2的2008次方+2的2007次方+2006次方+.+2²+2+1
-9x²y+3xyz=-3xy(3x-z)x(y-z)-y(z-y)=x(y-z)+y(y-z)=(y-z)(x+y)81x^4-y^4=(9x^2+y^2)(9x^2-y^2)=(9x^2+y^2)(3x^2+y)(3x^2-y)m²+7m-18(m-2)(m+9)(x+y)²+2(y+x)+1=(x+y+1)^2121(a-b)²-169(a+b)&...谢谢你为我解答.....