ax²+2ax+a 9(a+b)²+4(a-b)² x²(2x-5)+4(5-2
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ax²+2ax+a 9(a+b)²+4(a-b)² x²(2x-5)+4(5-2x) 2(m²+m-6)-(m-2)(2m+3) 因式分解
ax²+2ax+a
=a(x²+2x+1)
=a(x+1)²
9(a+b)²+4(a-b)²
=[3(a+b)+2(a-b)][3(a+b)-2(a-b)]
=(5a+b)(a+5b)
x²(2x-5)+4(5-2x)
=(2x-5)(x+2)(x-2)
2(m²+m-6)-(m-2)(2m+3)
=2(m+3)(m-2)-(m-2)(2m+3)
=(m-2)(2m+6-2m-3)
=2(m-2)
=a(x²+2x+1)
=a(x+1)²
9(a+b)²+4(a-b)²
=[3(a+b)+2(a-b)][3(a+b)-2(a-b)]
=(5a+b)(a+5b)
x²(2x-5)+4(5-2x)
=(2x-5)(x+2)(x-2)
2(m²+m-6)-(m-2)(2m+3)
=2(m+3)(m-2)-(m-2)(2m+3)
=(m-2)(2m+6-2m-3)
=2(m-2)
ax²+2ax+a 9(a+b)²+4(a-b)² x²(2x-5)+4(5-2
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