分解因式:9s(s-1)-2t(6s-2t-3)

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分解因式:9s(s-1)-2t(6s-2t-3)分解因式:9s(s-1)-2t(6s-2t-3)分解因式:9s(s-1)-2t(6s-2t-3)9s(s-1)-2t(6s-2t-3)=9s^2-9s-

分解因式:9s(s-1)-2t(6s-2t-3)
分解因式:9s(s-1)-2t(6s-2t-3)

分解因式:9s(s-1)-2t(6s-2t-3)
9s(s-1)-2t(6s-2t-3)
=9s^2-9s-12ts+4t^2+6t
=(9s^2-12ts+4t^2)-3(3s-2t)
=(3s-2t)^2-3(3s-2t)
=(3s-2t)*(3s-2t-3)

9s(s-1)-2t(6s-2t-3)
=9s^2-12ts+4t^2-9s+6t
=(3s-2t)^2-3(3s-2t)
=(3s-2t)(3s-2t-3)