b)
[tex](15 ^{2} ) ^{5} \div (3 {}^{9} \times 5 {}^{8} ) = [/tex]
va rog mult!!!!
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[tex] {( {15}^{2} )}^{5} \div ( {3}^{9} \times {5}^{8} ) = [/tex]

[tex] \frac{ { {15}^{2 \times 5} }^{} }{ {3}^{9} \times {5}^{8} } = \frac{ {15}^{10} }{{3}^{9} \times {5}^{8}} = \frac{ {5}^{10} \times {3}^{10} }{{3}^{9} \times {5}^{8}} = {5}^{2} \times 3 = 25 \times 3 = 75[/tex]

Răspuns:

= 15²ˣ⁵:(3⁹5⁸)

=15¹⁰:(3⁹·5⁸)

=(3¹⁰·5¹⁰):(3⁹·5⁸)

=3¹⁰⁻⁹·5¹⁰⁻⁸

=3·5²

=3·25=75