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Soal-soal Eksponen 1. Bentuk sederhana dari ( 1 + 3 2 ) – ( 4 –

50 ) adalah ….

a. – 2 2 – 3 b. – 2 2 + 5 c. 8 2 – 3 d. 8 2 + 3 e. 8 2 + 5 Jawab (1+3 2)–(4–

50 ) = ( 1 + 3 2 ) – ( 4 –

25.2 )

=(1+3 2)–(4– 5 2 )=1+3 2–4+ 5 2 =–3+ 8 2

7x 2. Nilai dari

(1 + 2 (1 + 2 (1 + 2 (1 + 2 (1 + 2

a. b. c. d. e.

−.

3 2 6

y5

1 −.   54  x − 6 y 3  x −2     2 ).9 2 2 ).9 3 2 ).18 3 2 ).27 2 2 ).27 3

untuk x = 4 dan y = 27 adalah ….

Jawab 7x

−.

3 2 6

  x − 6y   5 4

=

=

=

y5  −2 x  

1 −. 3

7(4)

−.

3 2

=

.(27)

7x

5 2

 52   2 − 6.3 −1 2 − 4     7 .3 2 . 3

(2

)

2 −1

x

5 6

3 2

.y . 1 −.    x − 6 y 3  x −2     5 4

5 6

7( 2 2 )

1 −.   54  (4) − 6(27) 3 (4) − 2    

7.2 −.3.3

−.

−.

3 2

5

.(33 ) 6 = 1 −.   2 54  (2 ) − 6(3 3 ) 3 (2 2 ) − 2     2+

1

7.2 −.3.3 2 .2 4 7.2.3 2 . 3 7.2.3 2 . 3 = = =  2 + 12 2 2 . 2 − 2 2 2. 2 − 1 1  2 − 6.   3 

2 2 +1 2 2 +1

(

=

) (

7.9 3 (2 2 + 1) = 9 3 (2 2 + 1) (8 − 1)

)

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