[tex]length = 9m \\ width = 5m[/tex]
Step-by-step explanation:
Given:
Length of photo is 4m more than width
To find:
Dimensions of photo
Solution:
Let the width be w length of photo = w+4
Dimensions with border:
[tex]length = l + 6 \\ = w + 10 \\ width = w + 6 \\ area = (w + 6)(w + 10) = 165 \\ {w}^{2} + 16w + 60 = 165 \\ {w}^{2} + 16w - 105 \\ {w}^{2} + 21w - 5w - 105 = 0 \\ w(w + 21) - 5(w + 21) = 0 \\ w = - 21 \\ w = 5m[/tex]
[tex]w = 5m \\ l = w + 4 \\ = 9m[/tex]
Ang sakit na ng daliri ko, sana makatulong :)
