已知(a-b)=4,(a+b)=6,求a+b和ab的值已知a-2b=7,ab=-3,求a+4ab+4b1.已知(a-b)=4,(a+b)=6,求a+b和ab的值 2.已知a-2b=7,ab=-3,求a+4ab+4b 3.(2a+3b)(4a+5b)(2a-3b)(5b-4a) 4.(m+a)-5(m+1)(m-1)+2(m-1)
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![已知(a-b)=4,(a+b)=6,求a+b和ab的值已知a-2b=7,ab=-3,求a+4ab+4b1.已知(a-b)=4,(a+b)=6,求a+b和ab的值 2.已知a-2b=7,ab=-3,求a+4ab+4b 3.(2a+3b)(4a+5b)(2a-3b)(5b-4a) 4.(m+a)-5(m+1)(m-1)+2(m-1)](/uploads/image/z/2523928-40-8.jpg?t=%E5%B7%B2%E7%9F%A5%EF%BC%88a-b%29%3D4%2C%EF%BC%88a%2Bb%29%3D6%2C%E6%B1%82a%2Bb%E5%92%8Cab%E7%9A%84%E5%80%BC%E5%B7%B2%E7%9F%A5a-2b%3D7%2Cab%3D-3%2C%E6%B1%82a%2B4ab%2B4b1.%E5%B7%B2%E7%9F%A5%EF%BC%88a-b%29%3D4%2C%EF%BC%88a%2Bb%29%3D6%2C%E6%B1%82a%2Bb%E5%92%8Cab%E7%9A%84%E5%80%BC+2.%E5%B7%B2%E7%9F%A5a-2b%3D7%2Cab%3D-3%2C%E6%B1%82a%2B4ab%2B4b+3.%EF%BC%882a%2B3b%29%284a%2B5b%29%282a-3b%29%285b-4a%29+4.%EF%BC%88m%2Ba%EF%BC%89-5%EF%BC%88m%2B1%29%EF%BC%88m-1%29%2B2%EF%BC%88m-1%29)
已知(a-b)=4,(a+b)=6,求a+b和ab的值已知a-2b=7,ab=-3,求a+4ab+4b1.已知(a-b)=4,(a+b)=6,求a+b和ab的值 2.已知a-2b=7,ab=-3,求a+4ab+4b 3.(2a+3b)(4a+5b)(2a-3b)(5b-4a) 4.(m+a)-5(m+1)(m-1)+2(m-1)
已知(a-b)=4,(a+b)=6,求a+b和ab的值已知a-2b=7,ab=-3,求a+4ab+4b
1.已知(a-b)=4,(a+b)=6,求a+b和ab的值 2.已知a-2b=7,ab=-3,求a+4ab+4b 3.(2a+3b)(4a+5b)(2a-3b)(5b-4a) 4.(m+a)-5(m+1)(m-1)+2(m-1)
已知(a-b)=4,(a+b)=6,求a+b和ab的值已知a-2b=7,ab=-3,求a+4ab+4b1.已知(a-b)=4,(a+b)=6,求a+b和ab的值 2.已知a-2b=7,ab=-3,求a+4ab+4b 3.(2a+3b)(4a+5b)(2a-3b)(5b-4a) 4.(m+a)-5(m+1)(m-1)+2(m-1)
1.(a+b)-(a-b)=6-4 (a+b+a-b)(a+b-a+b)=2 4ab=2 ab=1/2 (a+b)=a+b+2ab=6 a+b=5 2.(a-2b)+8ab=49-24 a-4ab+4b+8ab=25 a+4ab+4b=25 3.(2a+3b)(4a+5b)(2a-3b)(5b-4a) =(2a+3b)(2a-3b)(5b+4a)(5b-4a) =[4a-9b][25b-16a] 4.(m+a)-5(m+1)(m-1)+2(m-1) =m+2am+a-5m+5+2m-4m+1 =-2m+(2a+4)m+a+6