Please help me, 65 points to someone who can help me.
2 answers:
X= -1/2, -11/2 or in decimal form x=-0.5, -5.5
Answer:
<u>x = -0.5 , x = -5.5 </u> Step-by-step explanation:
<u>Solving</u>
-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
<u>Case 1 : x = +5</u>
2x + 6 = 5 2x = -1 x = -1/2 <u>x = -0.5 </u> <u>
<u>Case 2 : x = -5</u>
2x + 6 = -5 2x = -11 x = -11/2 <u>x = -5.5 </u>
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