Question

Please check if I did this right. If not please correct so I’ll understand what I did wrong.

Answer 1

x² - 10x + 25 can be factored to (x - 5)(x - 5). If 12 = x, substitute 12 for x.

(12 - 5)(12 - 5) which equals (7)(7) or 49. You could also plug in 12 for x in the original equation, so 12² - (10)(12) + 25 → 144 - 120 + 25 → 49. The length and width is 49in²

Answer 2

7 inches by 7 inches

Explanation:

x^2 -10x+25

Factor

What 2 numbers multiply to 25 and add to -10

-5*-5 = 25

-5+-5 = 10

(x-5) (x-5)

The dimensions are (x-5) by (x-5)

Substitute x=12 into the equation

(12-5) by (12-5)

7 by 7

The length is 7 and the width is 7