Sagot :
Problem:
Which of the following is a perfect square trinomial?
A. x² - 8x + 16
C. x² + 10x + 20
B. 2x² + 3x +9
D. x - 3x + 6
Solution:
x² - 8x + 16
(x - 4)( x - 4)
(x - 4)²
C. x² + 10x + 20
B. 2x² + 3x +9
D. x - 3x + 6
x² - 8x + 16
(x - 4)( x - 4)
(x - 4)²