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Calculati:(5^2×7^4)^3÷(5×7^2)^2 ; b) (7^4×3^4×2^5)^3÷(7^5×2^3)^2 ; c) (13^3×19^5×23^7)^2×(23^7×17^11×11^13)^3

Răspuns :

Spidie
(5²×7⁴)³÷(5×7²)² =5⁶*7¹² : 5²*7⁴=5⁴*7⁸=(5*7⁴)²

 b) (7⁴×3⁴×2⁵)³÷(7⁵×2³)²=(7¹²×3¹²×2¹⁵) ÷(7¹⁰×2⁶)= 7²*3¹²*2⁹

c) (13³×19⁵×23⁷)²×(23⁷×17¹¹×11¹³)³ =13⁶×19¹⁰×23¹⁴×23²¹×17³³×11³⁹=
=13⁶×19¹⁰×23³⁵× 17³³×11³⁹



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