利用因式分解计算,急急急!!!!!!!高手快来,在线等
202²+202×196+98²1-(a+b)²(a-b)²-4(b-a)+4x²﹙a-1﹚+y²﹙1-a﹚﹙...
202²+202×196+98²
1-(a+b)²
(a-b)²-4(b-a)+4
x²﹙a-1﹚+y²﹙1-a﹚
﹙x²+4﹚²-16x²
﹙x²+2x﹚²+2﹙x²+2x﹚+1
18x³y²-2x³
m的五次方-m 展开
1-(a+b)²
(a-b)²-4(b-a)+4
x²﹙a-1﹚+y²﹙1-a﹚
﹙x²+4﹚²-16x²
﹙x²+2x﹚²+2﹙x²+2x﹚+1
18x³y²-2x³
m的五次方-m 展开
4个回答
2013-05-19 · 知道合伙人教育行家
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202²+202×196+98²
=(202+98)²
=300²
=90000
1-(a+b)²
=(1+a+b)(1-a-b)
(a-b)²-4(b-a)+4
=(a-b)²+4(a-b)+4
=(a-b+2)²
x²﹙a-1﹚+y²﹙1-a﹚
=x²﹙a-1﹚-y²﹙a-1﹚
=(a-b)(x²-y²)
=(a-b)(x+y)(x-y)
﹙x²+4﹚²-16x²
=[(x²+4)+4x)][(x²+4)-4x]
=(x+2)²(x-2)²
﹙x²+2x﹚+1
=(x+1)²
18x³y²-2x³
=2x³(9y³-1)
=2x³(3y+1)(3y-1)
=(202+98)²
=300²
=90000
1-(a+b)²
=(1+a+b)(1-a-b)
(a-b)²-4(b-a)+4
=(a-b)²+4(a-b)+4
=(a-b+2)²
x²﹙a-1﹚+y²﹙1-a﹚
=x²﹙a-1﹚-y²﹙a-1﹚
=(a-b)(x²-y²)
=(a-b)(x+y)(x-y)
﹙x²+4﹚²-16x²
=[(x²+4)+4x)][(x²+4)-4x]
=(x+2)²(x-2)²
﹙x²+2x﹚+1
=(x+1)²
18x³y²-2x³
=2x³(9y³-1)
=2x³(3y+1)(3y-1)
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202²+202×196+98²
解,得:
==(202+98)^2
==300^2
==90000
1-(a+b)²
解,得:
==[1+(a+b)][1-(a+b)]
==(1+a+b)(1-a-b)
(a-b)²-4(b-a)+4
解,得:
==[(a-b)-2]^2
==(a-b-2)^2
x²﹙a-1﹚+y²﹙1-a﹚
解,得:
x²﹙a-1﹚-y²﹙a-1﹚
==(a-1)(x^2-y^2)
==(a-1)(x+y)(x-y)
﹙x²+4﹚²-16x²
解,得:
==[(x^2+4)+4x][(x^2+4)-4x]
==(x^2+4x+4)(x^2-4x+4)
==(x+2)^2(x-2)^2
﹙x²+2x﹚²+2﹙x²+2x﹚+1
解,得:
==[(x^2+2x)+1]^2
==(x^2+2x+1)^2
==(x+1)^4
18x³y²-2x³
解,得:
==2x^3(y^2-1)
==2x^3(y+1)(y-1)
解,得:
==(202+98)^2
==300^2
==90000
1-(a+b)²
解,得:
==[1+(a+b)][1-(a+b)]
==(1+a+b)(1-a-b)
(a-b)²-4(b-a)+4
解,得:
==[(a-b)-2]^2
==(a-b-2)^2
x²﹙a-1﹚+y²﹙1-a﹚
解,得:
x²﹙a-1﹚-y²﹙a-1﹚
==(a-1)(x^2-y^2)
==(a-1)(x+y)(x-y)
﹙x²+4﹚²-16x²
解,得:
==[(x^2+4)+4x][(x^2+4)-4x]
==(x^2+4x+4)(x^2-4x+4)
==(x+2)^2(x-2)^2
﹙x²+2x﹚²+2﹙x²+2x﹚+1
解,得:
==[(x^2+2x)+1]^2
==(x^2+2x+1)^2
==(x+1)^4
18x³y²-2x³
解,得:
==2x^3(y^2-1)
==2x^3(y+1)(y-1)
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202^2+202*196+98^2=(202+98)^2=300^2=90000
1-(a+b)^2=(1+a+b)(1-a-b)
(a-b)^2-4(b-a)+4=(a-b)^2+4(a-b)+4=(a-b+2)^2
x^2(a-1)+y^2(1-a)=x^2(a-1)-y^2(a-1)=(a-1)(x+y)(x-y)
(x^2+4)^2-16x^2=(x^2+4+4x)(x^2+4-4x)=(x+2)^2(x-2)^2
(x^2+2x)^2+2(x^2+2x)+1=(x^2+2x+1)^2=(x+1)^4
18x^3y^2-2x^3=2x^3(9y^2-1)=2x^3(3y+1)(3y-1)
1-(a+b)^2=(1+a+b)(1-a-b)
(a-b)^2-4(b-a)+4=(a-b)^2+4(a-b)+4=(a-b+2)^2
x^2(a-1)+y^2(1-a)=x^2(a-1)-y^2(a-1)=(a-1)(x+y)(x-y)
(x^2+4)^2-16x^2=(x^2+4+4x)(x^2+4-4x)=(x+2)^2(x-2)^2
(x^2+2x)^2+2(x^2+2x)+1=(x^2+2x+1)^2=(x+1)^4
18x^3y^2-2x^3=2x^3(9y^2-1)=2x^3(3y+1)(3y-1)
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(202+98)²
(1+a+b)(1-a-b)
(a-b+2)(a-b+2)
(a-1)(x+y)(x-y)
(x+2)²(x-2)²
(x+1)(x+1)(x+1)(x+1)
2x³(3y+1)(3y-1)
(1+a+b)(1-a-b)
(a-b+2)(a-b+2)
(a-1)(x+y)(x-y)
(x+2)²(x-2)²
(x+1)(x+1)(x+1)(x+1)
2x³(3y+1)(3y-1)
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