X方-5XY+6X方-3X+6Y分解因式計算1.22方*9-1.33方*4
1.應是6Y^2.X^2-5XY+6Y^2-3X+6Y=(X-2Y)(X-3Y)-3(X-2Y)=(X-2Y)(X-3Y-3)2.22^2*9-1.33^2*4=(22*3+1.33*2)(22*3-1.33*2)=(66+2.66)(66-2.66)=自己算吧
