Question 20
Quadratic EquationsWhat must be added to x2 − 3x to make it a perfect square?
- A.9/4
- B.9/2
- C.6
- D.9
Show the answer and explanation
Answer: A (9/4)
Explanation
Add the square of half the coefficient of x: (3/2)2 = 9/4, giving (x − 3/2)2.
What must be added to x2 − 3x to make it a perfect square?
Answer: A (9/4)
Add the square of half the coefficient of x: (3/2)2 = 9/4, giving (x − 3/2)2.