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Penyelesaian:14. Ingat: a^m . a^n = a^m+n
a^m / a^n = a^m-n
= a^(-5+2+1+3) . b^(3+4-4+1)
= (A).
15.
=
=
= -2x = 3
x = -3/2
x = -1,5 (C).
16.
=
=
= (D).
17. Ingat: (a + b)(a - b) = a² - b²
= 25 - 8
= 17 (A).
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