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=> 8x^ + xy^ - 1
b) 2x^y - x^y - xy^ + 2xy^ + 3 - 7
=> x^y + xy^ - 4
c) ( 2p - 3) - ( 3p + 7 ) - ( 5p - 9 ) + ( p - 12)
=> (2p - 3p - 5p + p) ( - 3 + 7 - 9 - 12 )
=> -p-17
d) -2(m+3) -4(2m-2(2m+5)-8)
=> -2m-6 -8m+8m+40+32
=> -2m-8m+8m -6+40+32
=> -2m + 66
e) 3(6a-(a+b)) + 3(-2(2a+3b)) + 4(a-b)
=> 18a-18a^-18b -6-12a-18b + 4a-4b
=> 18a^ - 18a -12a + 4a -18b-18b -4b -6
=> 18a^ -26a -40b - 6
2. a) (3x-2)(4x+5)
=> 12x^ -8x+15x -10
=> 12x^ +7x -10
b) (x+8y)(2x-3y)
=> 2x^ + 16xy-3xy -24y^
=> 2x^ + 13xy - 24y^
c) (9p-5q)^
=> 81p^ -90p-25q^
d) (8a-3b)(8a+3b)
=> 64a^ - 9b^
e) (x+5)(x^+6x+5)
=> (x+5)(x+5) (x+1)
=> x pangkat 3 + 25