俊狼猎英团队为您解答
(1)已知a^2+2ab+b^2=0,
(a+b)^2=0,a+b=0,
代数式a(a+4b)-(a+2b)(a-2b)
=a^2+4ab-a^2+4b^2
=4b(a+b)
=0
(2)因式分解;m^2(p-q)-p+q
=m^2(p-q)-(p-q)
=(p-q)(m^2-1)
=(p-q)(m+1)(m-1).
(1)已知a^2+2ab+b^2=0,求代数式a(a+4b)-(a+2b)(a-2b)的值
a^2+2ab+b^2=0
∴(a+b)²=0
∴a+b=0
a(a+4b)-(a+2b)(a-2b)
=a²+4ab-a²+4b²
=4ab+4b²
=4b(a+b)
=0
(2)因式分解;m^2(p-q)-p+q
=m²(p-q)-(p-q)
=(p-q)(m²-1)
=(p-q)(m+1)(m-1)