1.(b²+2a²)(2a²-b²) 2.(4x²-4y²)
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1.(b²+2a²)(2a²-b²) 2.(4x²-4y²)(x²+y²)
3.—(x-1)(x+1)-3(x+2)(x-2) 4.(5y²+4x²)[4y²+(2x-y)(-2x-y)]
3.—(x-1)(x+1)-3(x+2)(x-2) 4.(5y²+4x²)[4y²+(2x-y)(-2x-y)]
1.(b²+2a²)(2a²-b²)=1.(2a²+b²)(2-b²)=4a四次方-b四次方
2.(4x²-4y²)(x²+y²)=4 (x²-y²)(x²+y²)=4(X四次方-y四次方)=4X四次方-4y四次方
3—(x-1)(x+1)-3(x+2)(x-2)=-X²+1-3(X²-4)=-4X²+13
4.(5y²+4x²)[4y²+(2x-y)(-2x-y)]=(5y²+4x²)[4y²-(2x-y)(2x+y)]
=(5y²+4x²)[4y²-4x²+y²]=(5y²+4x²)(5y²-4x²)=25Y四次方-16X四次方
2.(4x²-4y²)(x²+y²)=4 (x²-y²)(x²+y²)=4(X四次方-y四次方)=4X四次方-4y四次方
3—(x-1)(x+1)-3(x+2)(x-2)=-X²+1-3(X²-4)=-4X²+13
4.(5y²+4x²)[4y²+(2x-y)(-2x-y)]=(5y²+4x²)[4y²-(2x-y)(2x+y)]
=(5y²+4x²)[4y²-4x²+y²]=(5y²+4x²)(5y²-4x²)=25Y四次方-16X四次方
1.(b²+2a²)(2a²-b²) 2.(4x²-4y²)
(a²+b²)²-4a²b²化简
分解因式 x²(x²-y²)+z²(y²-x²) (a+b)
1.-9a²+4b² 2.(2a-b+c)²-(3a+2b)² 3. 4x&su
例如:a²+b²-c²-4d²-2ab+4cd x²+2xy+y&su
若x²+4y²=(x+2y)²+A=(x-2y)²+B,则A= B=
化简:(b²-a²)/(a²-2ab+b²)
12x²+4x-1 x²-(a+b)xy+aby² xy-1+x-y x²-(2
已知多项式A=x²+2y²-z²,B=-4x²+3y²+2z²
1.若a²+4b²-2a+4b+2=0,求a、b的值 2.已知x、y满足x²+y²
2(a²+b²)(a+b)²-(a²-b²)²
3a-3b/10ab*25a²b³/a²-b² x²-4y²