Question

Tolong yang 7 8 9 soal di bawah ini dgn cara yg jls n lngkap

Answer 1

7. (2x²y³)⁴ : (x⁻¹y)⁵
= 2⁴x⁸y¹² : x⁻⁵y⁵
= 2⁴x⁽⁸ ⁻ ⁽⁻⁵⁾⁾y⁽¹²⁻⁵⁾
= 2⁴x¹³y⁷
= 16x¹³y⁷

Jawaban: D

8. (28a⁶b⁴c³) / (7a²b²c²)
= 4a⁽⁶⁻²⁾b⁽⁴⁻²⁾c⁽³⁻²⁾
= 4a⁴b²c

Jawaban: B

9. [(a^1/2 b ^-3) / (a^-1 b^-3/2)]^2/3
= [(a^(1/2 - (-1)) b^(-3 - (-3/2))]^2/3
= (a^3/2 b^-3/2)^2/3
= ab^-1
= a/b

Jawaban: B