a^2+5(a-b)(a+b)-(3a-2b)^2+9b^2,化简
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a^2+5(a-b)(a+b)-(3a-2b)^2+9b^2,化简
![a^2+5(a-b)(a+b)-(3a-2b)^2+9b^2,化简](/uploads/image/z/18779553-9-3.jpg?t=a%5E2%2B5%28a-b%29%28a%2Bb%29-%283a-2b%29%5E2%2B9b%5E2%2C%E5%8C%96%E7%AE%80)
a^2+5(a-b)(a+b)-(3a-2b)^2+9b^2
=a²+5a²-5b²-9a²+12ab-4b²+9b²
=-3a²+12a
=a²+5a²-5b²-9a²+12ab-4b²+9b²
=-3a²+12a
化简:{[(2a-b)/(a+b)]-[b/(a-b)]}÷[(a-2b)/(a+b)]
化简(2a-b/a+b-b/a-b)除以a-2b/a +b
化简(2a-b/a+b-b/a-b)除以a-2b/a+b
化简 |a+b|-|3a-2b|
化简 (a+b)²+2a(a-1/2b)-3(a-b)(a+b)
因式分解(a-b)-3a+3b (a+b)(a-b)-2b(3a-5b)
a-b+2b²/a+b
A=B+B+B+B+B+B+B+B+B+B+B+B+B+B+B A-B×3=C C+2×7+2=1
[(a+2b)(a-2b)-(2a-b)²+(3a-b)(3a-5b)]÷2a
[(a-2b)²-(a+3b)(a-2b)]/(-5b)化简.
计算:((a+b)(a-b)-(a-b)^2+2b(a-b))/4(a-b)
计算·[(2a+-b)/(a+b)-b/(a+b)]/(a-2b)/(a+b)