Question

2. Which trinomial below is equivalent to the square of the binomial x-5?

(1) x² + 25
(3) x? - 25
(2) x² -10x+25
(4) x?-10x – 25

Answer 1

2) x² - 10x + 25

Explanation:

(x - 5)(x - 5) = x² - 5x -5x + 25

Combining like terms

x² - 10x + 25