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q = (3x-5)(3x-5) ⇒ 9x^2-15x-15x+25 ⇒ 9x^2-30x+25
maka p-q/10 ⇒ 9x^2 +30x+25 - 9x^2-30x+25/10
hasilnya 60 /10 = 6
4. lihat foto