Step-by-step explanation:
given:
length of rectangle=3+w
area of rectangle=58+area of square
side of square=6
SOLUTION
area of square=L^2
area of square=6^2
area of square= 36
area of rectangle=58+area of square
area of rectangle=58+36
=94
area of rectangle =L×w
94=(3+w)×w
94=3w+w^2
w^2+3w=94
w^2+3w+(3/2)^2=94+(3/2)^2
(w+3/2)^2=94+9/4
(w+3/2)^2=385/4
√(w+3/2)^2=√385/√4
(w+3/2)=±√385/2
hope it gives you a hint
