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Solve for A # equation # solve equation

Will move the same side. ➗ Move to the other side. ✖️

Recite that you can do it because tomorrow we take the exam. 😂

2025/12/1 Edited to

... Read moreการแก้สมการเพื่อหา A นั้น เราควรเข้าใจวิธีการจัดการกับตัวแปรในสมการอย่างถูกวิธี เช่น การย้ายฝั่งจากการหารไปเป็นการคูณ หรือการคูณไปเป็นการหาร โดยต้องทำทุกขั้นตอนอย่างสมดุลกัน เช่น สมมติว่ามีสมการว่า A ÷ 5 = 2 วิธีแก้คือย้าย 5 ไปอีกฝั่งโดยเปลี่ยนเป็นการคูณกลายเป็น A = 5 × 2 ซึ่งได้ผลลัพธ์คือ A = 10 ส่วนตัวฉันพบว่า การท่องจำกฎการย้ายฝั่งนี้ช่วยได้มากเวลาทำโจทย์ ยิ่งใกล้สอบก็ยิ่งต้องฝึกบ่อยๆ เพื่อความมั่นใจ และอย่าลืมตรวจทานคำตอบทีละขั้นตอน เพื่อป้องกันการผิดพลาดนั่นเองค่ะ นอกจากนี้ การเข้าใจลักษณะของสมการพื้นฐานและฝึกแก้สมการที่คล้ายกันหลายๆ แบบจะช่วยให้การหา A เป็นเรื่องง่ายและรวดเร็วขึ้นมาก ลองฝึกจดบันทึกวิธีแก้และทบทวนกับเพื่อนๆ หรือพี่ปั้น Fun Maths ก็ช่วยให้เห็นภาพชัดขึ้น รวมทั้งเพิ่มความมั่นใจในการทำโจทย์ก่อนสอบจริงด้วยค่ะ

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A handwritten page in a lined notebook displays algebraic equations, specifically Brahmagupta's identity. It shows the expansion of (a²+b²)(c²+d²) into two different forms: (ac+bd)²+(ad-bc)² and (ac-bd)²+(ad+bc)², illustrating how the product of two sums of squares can be expressed as a sum of two squares.
Two squares times two squares makes two squares
The sum of two squares times the sum of another two squares equals the sum of yet another two squares. These formulae are used to find examples like 5 × 13 = (2²+1²) × (2²+3²) = 65 = 8²+1² = 7²+4². #math #maths #mathematics #algebra #arithmetic
cubicequation

cubicequation

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