5.
32=2⁵
32³=(2⁵)³=2¹⁵
2⁷*32=2⁷*2⁵=2¹²
[tex] \frac{ {32}^{3} }{ {2}^{9} } = \frac{ ({ {2}^{5} )}^{3} }{ {2}^{9} } = \frac{ {2}^{15} }{ {2}^{9} } = {2}^{6} [/tex]
[tex] \frac{ {2}^{7} \times {32}^{3} }{2} = \frac{ {2}^{7} \times { ({2}^{5} })^{3} }{2} = \frac{ {2}^{7} \times {2}^{15} }{2} = \frac{ {2}^{22} }{2} = {2}^{21} [/tex]
6.
2 000 000=2*10⁶
53 400=5,34*10⁴
[tex]0.0008 = 8 \times {10}^{ - 4} [/tex]
[tex]0.0000672 = 6.72 \times {10}^{ -5 } [/tex]
