Question

Please help me, 65 points to someone who can help me.

Answer 1

x= -1/2, -11/2 or in decimal form x=-0.5, -5.5

Answer 2

• x = -0.5 , x = -5.5

Explanation:

Solving

• -4x² = 24x + 11
• 4x² + 24x + 11 = 0
• 4x² + 24x + 36 - 36 + 11 = 0
• (2x + 6)² - 25 = 0
• (2x + 6)² = 25
• ⇒ 2x + 6 = ±5

Case 1 : x = +5

• 2x + 6 = 5
• 2x = -1
• x = -1/2
• x = -0.5

Case 2 : x = -5

• 2x + 6 = -5
• 2x = -11
• x = -11/2
• x = -5.5