Question

B) - 3^3+(-3)^20:(3^18) × 3+3×3^8:(-3^10):(8×3^5+3^5)-2×(-3)^3
C)[3-3×(-3^43)+(-7^5)^10: 7^7^2]:[(-9)^22+7^1^22-(-15 ^n+1):5^n+1:3^n] ​

Answer 1

Răspuns:

B) - 3^3+(-3)^20:(3^18) × 3+3×3^8:(-3^10):(8×3^5+3^5)-2×(-3)^3

=-3³+(-3)²⁰:3¹⁸×3+3×3⁸:(-3¹⁰):(8×3⁵+3⁵)-2×(-3)³

=-3³+3²⁰:3¹⁰×3+3×3⁸:(-3)¹⁰:3⁵×(8+1)-2×(-3³)

=--3³+3²⁰⁻¹⁰⁺¹+3¹⁺⁸:3¹⁰:3⁵×9+2×3³

=-3³+3¹¹+3⁹⁻¹⁰⁻⁵×3²+2×3³

=-3³+3¹¹+3⁻⁶⁺²+2×3³

=3³+3¹¹+3⁻⁴

C)[3-3×(-3^43)+(-7^5)^10: 7^7^2]:[(-9)^22+7^1^22-(-15 ^n+1):5^n+1:3^n]

=[3-3×(-3⁴³)+(-7⁵)¹⁰: (7⁷)²]:[(-9)²²+(7¹)²²-(-15ⁿ⁺¹):5ⁿ⁺¹:3ⁿ]

=[3-3¹⁺⁴³+7⁵˟¹⁰: 7⁷˟²]:[9²²+7²²-(-15:5)ⁿ⁺¹:3ⁿ]

=[3-3⁴⁴+7⁵⁰: 7¹⁴]:[(3²)²²+7²²-(-3)ⁿ⁺¹:3ⁿ]

=[3-3⁴⁴+7⁵⁰⁻¹⁴]:[3⁴⁴+7²²+3ⁿ⁺¹⁻ⁿ]

=[3-3⁴⁴+7³⁶]:[3⁴⁴+7²²+3]

=[3-3⁴⁴+7³⁶]:[3+3⁴⁴+7²²]

altădată să pui și foto cu exercițiile

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