tolong bantuin jawab dongg🙏🏻

<p>ok saya bantu jawab ya.........</p><p>1. x² + 4x - 21 = 0</p><p>&nbsp; &nbsp; &nbsp;(x + 7)(x - 3) = 0</p><p>&nbsp; &nbsp; &nbsp;x₁ = -7 atau x₂ = 3</p><p>&nbsp;</p><p>2. x² - 6x - 55 = 0</p><p>&nbsp; &nbsp; &nbsp;(x + 5)(x - 11) = 0</p><p>&nbsp; &nbsp; &nbsp;x₁ = -5 atau x₂ = 11</p><p>&nbsp;</p><p>3. x² + 5x - 14 = 0</p><p>&nbsp; &nbsp; &nbsp;(x + 7)(x - 2) = 0</p><p>&nbsp; &nbsp; &nbsp;x₁ = -7 atau x₂ = 2</p><p>&nbsp;</p><p>4. 2x² - 5x &nbsp;+ 3 &nbsp;= 0</p><p>&nbsp; &nbsp; &nbsp;2x² - 2x &nbsp;- 3x + 3 &nbsp;= 0</p><p>&nbsp; &nbsp; &nbsp;2x(x - 1) - 3(x - 1) = 0</p><p>&nbsp; &nbsp; &nbsp;(2x - 3)(x - 1) = 0</p><p>&nbsp; &nbsp; &nbsp;x₁ = 3/2 atau x₂ = 1</p><p>&nbsp;</p><p>5. 2x² + x &nbsp;- 3 &nbsp;= 0</p><p>&nbsp; &nbsp; 2x² - 2x + 3x - 3 &nbsp;= 0</p><p>&nbsp; &nbsp; 2x(x - 1) + 3(x - 1) = 0&nbsp;</p><p>&nbsp; &nbsp; (2x + 3)(x - 1) = 0</p><p>&nbsp; &nbsp; &nbsp;x₁ = -3/2 atau x₂ = 1</p>