Question

Find the value of c that makes the trinomial a personal square
x² - 14x+c

Answer 1

c = 49

Explanation:

`x^(2) -14x+49`

`=(x-7)(x-7)=(x-7)^(2)`

Hope this helps

Answer 2

c = 169

Explanation:

To make the trinomial a perfect square

add ( half the coefficient of the x- term )², that is

x² + 2(13)x + 13²

= x² + 26x + 169

= (x + 13)² ← a perfect square