(3a-4b)(7a-8b)+(11a+2b)(8b-7a)
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(3a-4b)(7a-8b)+(11a+2b)(8b-7a)
(3a-4b)(7a-8b)+(11a+2b)(8b-7a)
(3a-4b)(7a-8b)+(11a+2b)(8b-7a)
=(3a-4b)(7a-8b)-(11a+2b)(7a-8b)
=(7a-8b)(3a-4b-11a-2b)
=(7a-8b)(-8a-6b)
=-2(7a-8b)(4a+3b)
(3a-4b)(7a-8b)+(11a+2b)(8b-7a)
=(3a-4b)(7a-8b)-(11a+2b)(7a-8b)
=(7a-8b)[(3a-4b)-(11a+2b)]
=(7a-8b)(-8a-6b)
=-2(7a-8b)(4a+3b)
=-2(28a^2-53ab+48b^2)
=-56a^2+106ab-96b^2
(3a-4b)(7a-8b)+(11a+2b)(8b-7a)
=(3a-4b)(7a-8b)-(11a+2b)(7a-8b)
=(7a-8b)[(3a-4b)-(11a+2b)]
=(7a-8b)(-8a-6b)
=-2(7a-8b)(4a+3b)
(3a-4b)(7a-8b)+(11a+2b)(8b-7a)
a+b分之3a-6b-a-b分之5a-6b-a+b分之4a-5b-b-a分之7a-8b
(3a-6b/a+b)-(5a-6b/a-b)-(4a-5b/a+b)-(7a-8b/b-a)
若(a-b):(a+b)=3:7则a:b等于
已知a+b/a-b=3,求代数式a+b/2(a-b)-3(a-b)/a+b
a(a+b)(b-a)-b(a+b)(a-b),
已知a=(2,3)b=(-1,-2),求2a,3b,a+b,a-b,2a-3b
当a+2b/2a-3b=3时,求代数式(4b+2a/9b-6a)-(4a-6b/3a+6b)的值
(3a+4b)(7a-8b)+(11a+2b)(8a-7a)
(3a-4b)(7a-8b)+(11a-12b)(8b-7a)
把多项式(3a-4b)(7a-8b)-(11a-12b)(7a-8b)因式分解的结果是A.8(7a-8b)(a-b)B.2(7a-8b)²C.8(7a-8b)(b-a)D.-2(7a-8b)
a△b=a×b-3a+4b.那么8△(5△7)=()
规定A△B等于A×B-3A+4B,那么8△(5△7)=( )
(a-4b)(2a+3b)-(a+2b)(a-b)
如果a:b=3:2,则 (a+b):b= b:(a+b)= (a-b):b= b:(a-b)=
如果a>0,b<0,那么A的绝对值+B的绝对值等于( ) A a+b B a-b C b-a D -a-b 老师说是B.我是A如果a>0,b<0,那么A的绝对值+B的绝对值等于( )A a+b B a-b C b-a D -a-b老师说是B.我是A
因式分解a(a-b)(a-3b)+ab平方
(a+b)(a+b)-12(a+b)+36