(1)a²b²-0.01(2)x²y-2xy²+y³(3)16-(2a+3b)² 15
(4)(a²+4)²-16a²(5)x²-xy+1/4y²(6)a²x²+16ax+64(7)a^4...
(4)(a²+4)²-16a²(5)x²-xy+1/4y²(6)a²x²+16ax+64 (7)a^4-8a²b²+16b^4(8)9+6(a+b)+(a+b)+(a+b)²八年级分解因式
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(1)a²b²-0.01
=(ab-0.1)(ab+0.1)
(2)x²y-2xy²+y³
=y(x²-2xy+y²)
=y(x-y)²
(3)16-(2a+3b)²
=(4-2a-3b)(4+2a+3b)
(4)(a²+4)²-16a²
=(a²+4-4a)(a²+4+4a)
=(a-2)²(a+2)²
(5)x²-xy+1/4y²
=(x-1/2y)²
(6)a²x²+16ax+64
=(ax+8)²
(7)a^4-8a²b²+16b^4
=(a²-4b²)²
=[(a-2b)(a+2b)]²
=(a-2b)²(a+2b)²
(8)9+6(a+b)+(a+b)²
=(3+a+b)²
=(ab-0.1)(ab+0.1)
(2)x²y-2xy²+y³
=y(x²-2xy+y²)
=y(x-y)²
(3)16-(2a+3b)²
=(4-2a-3b)(4+2a+3b)
(4)(a²+4)²-16a²
=(a²+4-4a)(a²+4+4a)
=(a-2)²(a+2)²
(5)x²-xy+1/4y²
=(x-1/2y)²
(6)a²x²+16ax+64
=(ax+8)²
(7)a^4-8a²b²+16b^4
=(a²-4b²)²
=[(a-2b)(a+2b)]²
=(a-2b)²(a+2b)²
(8)9+6(a+b)+(a+b)²
=(3+a+b)²
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(1)a²b²-0.01=(ab-0.1)(ab+0.1)
(2)x²y-2xy²+y³=y(x²-2xy+y²)=y(x-y)²
(3)16-(2a+3b)²=(4-2a-3b)(4+2a+3b)
(4)(a²+4)²-16a²=(a²+4-4a)(a²+4+4a)=(a-2)²(a+2)²
(5)x²-xy+1/4y²=(x-1/2y)²
(6)a²x²+16ax+64=(ax+8)²
(7)a^4-8a²b²+16b^4=(a²-4b²)²=(a-2b)²(a+2b)²
(8)9+6(a+b)+(a+b)²=(3+a+b)²
(2)x²y-2xy²+y³=y(x²-2xy+y²)=y(x-y)²
(3)16-(2a+3b)²=(4-2a-3b)(4+2a+3b)
(4)(a²+4)²-16a²=(a²+4-4a)(a²+4+4a)=(a-2)²(a+2)²
(5)x²-xy+1/4y²=(x-1/2y)²
(6)a²x²+16ax+64=(ax+8)²
(7)a^4-8a²b²+16b^4=(a²-4b²)²=(a-2b)²(a+2b)²
(8)9+6(a+b)+(a+b)²=(3+a+b)²
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(1)a²b²-0.01
=(ab+0.1)(ab-0.1)
(2)x²y-2xy²+y³
=y(x²-2xy+y²)
=y(x-y)²
(3)16-(2a+3b)²
=[4+(2a+3b)][4-(2a+3b)]
=(4+2a+3b)(4-2a-3b)
(4)(a²+4)²-16a²
=(a²+4+4a)(a²+4-4a)
=(a+2)²(a-2)²
(5)x²-xy+1/4y²
=(x-½y)²
(6)a²x²+16ax+64
=(ax+8)²
(7)a^4-8a²b²+16b^4
=(a²)²-8a²b²+(4b²)²
=(a²-4b²)²
=[(a+2b)(a-2b)]²
=(a+2b)²(a-2b)²
(8)9+6(a+b)+(a+b)²
=3²+6(a+b)+(a+b)²
=(3+a+b)²
=(ab+0.1)(ab-0.1)
(2)x²y-2xy²+y³
=y(x²-2xy+y²)
=y(x-y)²
(3)16-(2a+3b)²
=[4+(2a+3b)][4-(2a+3b)]
=(4+2a+3b)(4-2a-3b)
(4)(a²+4)²-16a²
=(a²+4+4a)(a²+4-4a)
=(a+2)²(a-2)²
(5)x²-xy+1/4y²
=(x-½y)²
(6)a²x²+16ax+64
=(ax+8)²
(7)a^4-8a²b²+16b^4
=(a²)²-8a²b²+(4b²)²
=(a²-4b²)²
=[(a+2b)(a-2b)]²
=(a+2b)²(a-2b)²
(8)9+6(a+b)+(a+b)²
=3²+6(a+b)+(a+b)²
=(3+a+b)²
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1=(ab-0.1)(ab+0.1)
2=y(x-y)²
3=(4-2a-3b)(4+2a+3b)
4=(a-2)²(a+2)²
5=(x-1/2y)²
6=(ax+8)²
7=(a-2b)²(a+2b)²
8=(3+a+b)²+(a+b)第8题是否有误 可追问
2=y(x-y)²
3=(4-2a-3b)(4+2a+3b)
4=(a-2)²(a+2)²
5=(x-1/2y)²
6=(ax+8)²
7=(a-2b)²(a+2b)²
8=(3+a+b)²+(a+b)第8题是否有误 可追问
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