Question

Which of the following statements is/are true? 1) (3x^2–x+2)^2= 9x^4– 6x^3 +x² - 4x + 4
2)a^2+b^2+c^2-ab-bc-ca is always positive ) '​

Answer 1

Answer:

first one is true

Step-by-step explanation:

(a+b+c)²=a²+b²+c²+2ab+2bc+2ac