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=(5x-x)(3y+y)(-2+2)
=4x+2y
maaf klu salah
=5x-x+3y+y-2+2
=4x+4y
b. 2p+3q-4
p-3q+2
+
3p+q-2
b. 7a pangkat 2 + 2
6a pangkat 2 -12a
-
a pangkat 2 + 14a