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=9x²-9y²
2. 11D+3E-13A-17A-5D-19E
=6D-16E-30A
3. -2p-18ps-2r-15p-7ps-6r
=17p-25ps-8r
4. (2x+3)(3x-2)
=6x²-4x+9x-6
=6x²+5x-6
kalo ada soal yg slah tlong d bnarkan!!!