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25a^2+20ab+4b^2
9a^2-3b^2+b^2
9x^2+12xy+4y^2
m^2-9mn+9n^2
:4p*-10q*
2.)(5a+2b)*
:10a*+4b*
3.)(-3a-b)*
:-6a*-b*
4.)(3x+2y)*
:6x*+4y*
5.)(-m+3n)*
:m*+6n*
catatan
tanda * artinya kuadrat