(1)ax^4-2ax²y²+ay^4(2)4a²b-8ab+4b(3)(a+b)²+6(a+b)+9(1)ax^4-2ax²y²+ay^4(2)4a²b-8ab+4b(3)(a+b)²+6(a+b)+9
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(1)ax^4-2ax²y²+ay^4(2)4a²b-8ab+4b(3)(a+b)²+6(a+b)+9(1)ax^4-2ax²y²+ay^4(2)4a²b-8ab+4b(3)(a+b)²+6(a+b)+9
(1)ax^4-2ax²y²+ay^4(2)4a²b-8ab+4b(3)(a+b)²+6(a+b)+9
(1)ax^4-2ax²y²+ay^4(2)4a²b-8ab+4b(3)(a+b)²+6(a+b)+9
(1)ax^4-2ax²y²+ay^4(2)4a²b-8ab+4b(3)(a+b)²+6(a+b)+9(1)ax^4-2ax²y²+ay^4(2)4a²b-8ab+4b(3)(a+b)²+6(a+b)+9
(1)
ax^4-2ax²y²+ay^4
=a(x^4-2x²y²+y^4)
=a(x²-y²)²
=a(x+y)²(x-y)²
(2)
4a²b-8ab+4b
=4b(a²-2a+1)
=4b(a-1)²
(3)
(a+b)²+6(a+b)+9
=(a+b)²+6(a+b)+3²
=(a+b+3)²
(1)ax^4-2ax²y²+ay^4
=a(x^4-2x^2y^2+y^4)
=a(x^2-y^2)^2
=a((x-y)^2(x+y)^2
(2)4a²b-8ab+4b
=4b(a^2-2a+1)
=4b(a-1)^2
(3)(a+b)²+6(a+b)+9
=(a+b+3)^2 【a+b看成一个整体】
1)ax^4-2ax²y²+ay^4
=a(x^4-2x²y²+y^4)
=a(x²-y²)²
=a(x-y)²(x+y)²
2)4a²b-8ab+4b
=4b(a²-2a+1)
=4b(a-1)²
3)(a+b)²+6(a+b)+9
=[(a+b)+3]²
=(a+b+3)²
(1)=a(x^4-2x^2y^=y^4)
=a(x^2-y^2)^2
=a((x-y)(x+y))^2
(2)=b(4a^2-8a+4)
=b(2a-4)^2
(3)=(a+b+3)^2
1.a(x^4-2x²y²y^4)=a(x²-y²)²=a(x+y)²(x-y)²
(1)(√ax^2-√ay^2)^2
(2)(2a√b-2√b)^2
(3) (a+B+3)^2
亲~这些题目呢都是平方和公式 这个是基本公式 (a±b)^2=a^2±2ab+b^2
(1)原式=a(x^4-ax^2y^2+y^4)
=a(x^2-y^2)^2
=a[(x+y)(x-y)]^2
(2)原式=4b(a^2-2a+1)
=4b(a-1)^2
(3)原式=[(a+b)+3]^2