algebra · worked example

Solve 2x² + 5x + 3 = (2x + 3)(x + 1)

Method: AC 分解法. Verified step-by-step solution with our free AI math solver.
Problem

2x2+5x+32x^2 + 5x + 3

Step-by-step solution

  1. 確認 a=2a = 2b=5b = 5c=3c = 3。計算 ac=6ac = 6

  2. 找出兩個相乘等於 66、相加等於 55 的數:(2,3)(2, 3)

  3. 拆分中間項:2x2+2x+3x+32x^2 + 2x + 3x + 3

  4. 分組提取公因式:2x(x+1)+3(x+1)=(2x+3)(x+1)2x(x + 1) + 3(x + 1) = (2x + 3)(x + 1)

Answer

(2x+3)(x+1)(2x + 3)(x + 1)

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