Answer:
35
Step-by-step explanation:
Use the quadratic formula to get x = (3 - 2*sqrt(6))/3 or x = (3 + 2*sqrt(6))/3
Answer:
5. 49, (x+7)²
6. 36, (x-6)²
7. 81/4, [x-(9/2)]²
Step-by-step explanation:
5. x² + 2(x)(7) + 7² = (x + 7)²
6. x² - 2(x)(6) + 6² = (x - 6)²
7. x² - 2(x)(9/2) + (9/2)² = (x - 9/2)²