Respuesta :

Answer:

Side one 5+2=7

Side two 5+5=10

Side three 25-15=10

Side four 15-2=13

Step-by-step explanation:

x+2+x+5+x^2-3x+3x-2=40

2x+5+x^2=40

x^2+2x-35=0

(x-5)(x+7)=0

x=5

Side one 5+2=7

Side two 5+5=10

Side three 25-15=10

Side four 15-2=13