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3 5
=2x+3x+1-2
15
=5x-1
15
b. x+1- x-2
2x 3x
=2x(x-2) - 3x(x+1)
6x 6x
=(2x^2 -4x) - (3x^2+3x)
6x 6x
= 2x^2 - 3x^2 -4 +3x
6x
=-1x^2 - 1x
6x
maaf yaa kalau salah