c.625 = 5⁴maka(2x + 1) / 2 = 42x + 1 = 82x = 8 - 12x = 7x = 7/2d.(2x - 1) / 2 = 4(x - 2)2x - 1 = 8(x - 2)2x - 1 = 8x - 168x - 2x = -1 + 166x = 15x = 15/6
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c.
625 = 5⁴
maka
(2x + 1) / 2 = 4
2x + 1 = 8
2x = 8 - 1
2x = 7
x = 7/2
d.
(2x - 1) / 2 = 4(x - 2)
2x - 1 = 8(x - 2)
2x - 1 = 8x - 16
8x - 2x = -1 + 16
6x = 15
x = 15/6