Salut aidez-moi svp C'est urgent : la question: L'extention de ces écrits :: A= ( 5⁷×2⁻⁵/ 8 × 625):10³ × 5² /56 ; B= ( 3⁷×2⁻ ⁶×9⁻¹)² / (9⁻²×3²×2⁻¹)³ , C=
( 5⁸ / 10²×2 ) ( 2³×5⁻³/4×25)²
( 5⁸ / 10²×2 ) ( 2³×5⁻³/4×25)²
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= (5^11 * 2^(-11) ) * 2^-3 *5^ -3) * 5^2* 2^-3 * 7 ^-1
= 5^10 * 2^(-17) * 7 ^(-1 )
B= ( 3⁷×2⁻ ⁶×9⁻¹)² / (9⁻²×3²×2⁻¹)³
= ( 3^5* 2⁻ ⁶)² / (3^-2*2⁻¹)³
= 3^10 * 2^-12 * 3^6 * 2 ^3
=3^16 * 2^-9
C=( 5⁸ / 10²×2 ) ( 2³×5⁻³/4×25)²
= ( 5^8)* (5^-2)* (2^-2)* (2 ^1) * (2^6)* (5^-6)* (2^-4)* (5^4 )
= 5^4 * 2