In the diagram below, the length of a square is (3x + 7) units. the dimensions of the cut-out rectangle

are x by (2x + 5) units. which choice expresses the area of the shaded region (green region), in square units?

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry

b.

step-by-step explanation:

i just know