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qu cuman jawab yg no 6 ajah..
6) a) (x+2) (x+4)
= x(x+4) 2(x+4)
= +4x+2x+8
= x2+6x+8
b) (2p+5)(2p-5)
= 2p2 - 52
c) (4+2m)(m-8)
= 4m-32-2m2-16
= -2m2 -4m+16m+32
= -2m2 +12m +32
d) 10x(2x-1) -3(2x-1)
= 20x2 -10x -6x +3
= 20x2 -16x +13
e) 7(7x-1) x(7x-1)
= 49x -7 +7x2 -x
= -7x2 -49x +x +7
= -7x2 -48x + 7
ka' yg dibelakang dua berarti pangkat 2 ya yg kecil diatas itu