16{(x-y)^2}-9{(x+y)^2}因式分解
4/9(a^2)-0.01b^2(要求同上)
3.66^2-4*1.33^2(同上)
202^2+202*196+98^2(同上)
X^4-X^2+8X-16(同上)
4a^m-6a^(m+2)+18^(m+1)b (同上)
4x^(m+2)y(^n)a-6x^(m+1)y^(n+2)b+2x(^m)y^(n+1)
16{(x-y)^2}-9{(x+y)^2}因式分解
4/9(a^2)-0.01b^2(要求同上)
3.66^2-4*1.33^2(同上)
202^2+202*196+98^2(同上)
X^4-X^2+8X-16(同上)
4a^m-6a^(m+2)+18^(m+1)b (同上)
4x^(m+2)y(^n)a-6x^(m+1)y^(n+2)b+2x(^m)y^(n+1)
16{(x-y)^2}-9{(x+y)^2}={4(x-y)}^2-{3(x+y)}^2= -(5x+y)(x+5y)
4/9(a^2)-0.01b^2=(2/3a)^2-(0.1b)^2=(2/3a+0.1b)(2/3a-0.1b)
3.66^2-4*1.33^2=3.66^2-(2*1.33)^2=(3.66+2.66)(3.66-2.66)=6.32
202^2+202*196+98^2=202^2+2*202*98+98^2=(202+98)^2=90000
X^4-X^2+8X-16=
r提公因式2
提公因式2x^my^n