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
问题描述:
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
答
ax²+2ax+a=a(x²+2x+1)=a(x+1)²9(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)...