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Simplify and express the result in power notation with positive exponent.2-3x (-7)-3. |
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Answer» (i) (−4) 5 ÷(−4) 8 = (−4) 8
(−4) 5
=(−4) 5−8 =(−4) −3 = (−4) 3
1
(ii) ( 2 3
1
) 2 = 2 3×2
1
= 2 6
1
(iii) (−3) 4 ×( 3 5
) 4 =(−1) 4 ×(3) 4 ×( 3 5
) 4 =(−1) 4 ×5 4 =5 4
(iv) (3 −7 ÷3 −10 )×3 −5 =( 3 −10
3 −7
)×(3) −5 =3 −7+10 ×3 −5
=3 3−5
=3 −2 = 3 2
1
(v) 2 −3 ×(−7) (−3) = 2 3
1
× (−7) 3
1
=( 2×(−7) 1
) 3
= (−14) 3
1
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