Kalaamstudio
Region: PK
Monday 31 August 2026 08:16:12 GMT
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sherazamin :
ماشاءاللہ ❤️
2026-09-06 11:14:32
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𝑀𝑅 𝒜𝐵𝑅𝒜𝑅 :
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2026-09-22 10:31:47
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(Ibrahim Khan)⚔️رستم خیل🦅 :
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2026-10-25 15:27:34
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Mr burhan saith😎 :
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2026-09-03 16:01:19
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Tasarruf Malik :
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2026-10-22 17:57:55
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😎GUJJAR😎 :
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2026-09-02 06:57:24
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2026-10-12 03:18:40
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MALIK SHAHID ❤️🫶🇵🇰 :
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2026-09-02 06:49:08
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Umerabbasi349 :
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2026-10-11 07:49:47
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Syed Faiz Ul Hassan Shah :
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2026-10-05 14:01:01
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حاجی اعجازاحمد چشتی اوفیشل :
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2026-09-25 14:59:23
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Ali hassnain bhatti :
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2026-09-24 04:07:01
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Mohammad Danish Kamal :
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2026-09-22 13:29:40
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رِضــــــوان :
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2026-09-22 07:08:41
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king 👑💖💖👑💖💖 :
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2026-09-19 17:09:35
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مزمل بجاڑ گجر 🇵🇰🇸🇦 :
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2026-09-17 18:35:07
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Muhammad tariq :
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2026-09-05 18:33:07
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Mr burhan saith😎 :
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2026-09-03 16:01:20
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Mr burhan saith😎 :
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2026-09-03 16:01:17
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Mirza Muhammad shahzaib :
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2026-09-02 15:20:44
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m sajjad gujjar 28 :
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2026-09-01 18:01:12
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arsalan 🥰🥰 :
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2026-08-31 08:21:17
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![1. Hằng đẳng thức * (a + b)² = a² + 2ab + b² * (a − b)² = a² − 2ab + b² * a² − b² = (a − b)(a + b) 2. Phương trình bậc hai * Δ = b² − 4ac * x₁ = (−b + √Δ)/(2a) * x₂ = (−b − √Δ)/(2a) 3. Định lý Pythagore * a² + b² = c² 4. Giá trị lượng giác * sin²x + cos²x = 1 * tan x = sin x / cos x * cot x = cos x / sin x 5. Tọa độ vectơ * AB⃗ = (xB − xA; yB − yA) * Độ dài vectơ u⃗ = (x; y): |u⃗| = √(x² + y²) 6. Khoảng cách hai điểm * AB = √[(xB − xA)² + (yB − yA)²] 7. Trung điểm đoạn thẳng * M((xA + xB)/2; (yA + yB)/2) 8. Tích vô hướng * u⃗ · v⃗ = x₁x₂ + y₁y₂ * u⃗ · v⃗ = |u⃗| |v⃗| cos α 9. Cấp số cộng * uₙ = u₁ + (n − 1)d * Sₙ = n(u₁ + uₙ)/2 10. Cấp số nhân * uₙ = u₁ · qⁿ⁻¹ * Sₙ = u₁(1 − qⁿ)/(1 − q), với q ≠ 1](/video/cover/7700620944150203656.webp)