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b) -8x²y - 36xy - 7xy - 14x = -8x²y - 43xy - 14x
c) 7x -6y + 8 + ( -3x +11y - 4) = 7x - 6y + 8 - 3x + 11y - 4 = 4x + 5y +4
a. (10p - 5q) - (-25p + 9q)
-10p + 5q +25p - 9q
-10p + 25p + 5q - 9q
15p - 4q - 4q
b. -4xy (2x + 9) - (-7x(y + 2))
-8x²y - 36xy + 7xy + 14x
-8x²y - 29xy + 14x
c. (7x - 6y + 8) + (-3x + 11y - 4)
7x - 6y + 8 - 3x + 11y - 4
7x - 3x -6y + 11y + 8 - 4
4x + 5y + 4
mdah"an bermanfaat :)