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B. 49 - 25= 24
C. 64 - 25 = 39
D. 81 - 16 = 65
E. 100 - 121 = -21
F. 81 - 100 = -19
G. 144 - 121 = 23
H. 144 - 64 = 80
B. 7²-5²=49-25=24
C. 8²-5²=64-25=39
D. 9²-4²=81-16=65
E. 10²-11²=100-121=-21
F. 9²-10²=81-100=-19
G. 12²-11²=144-121=23
F. 12²-8²=144-64=80
maaf klw ada yg keliru, tolong dicek lagi