Question

Shayna enlarged a square photo by adding 10 inches to each side so it could be seen on a large poster. The area of the enlarged photo is 256 square inches. In the equation (x + 10)2 = 256, x represents the side measure of the original square photo.

What were the dimensions of the original photo?
pls hurry

4 inches by 4 inches
6 inches by 6 inches
10 inches by 10 inches
12 inches by 12 inches

Answer 1

Its B on edge 2021

Explanation:

Just took a test

Answer 2

The correct answer is:

6 inches by 6 inches

Explanation:

Given that

Area of Enlarged photo = 256 square inches

Let x be the side of original photo

then the equation for area of new enlarged photo will be:

`(x+10)^2 = 256`

We have to solve the given equation to find the side length of original photo

Taking square root on both sides

`√((x+10)^2) = √(256)\\x+10 = 16`

Subtracting 10 from both sides

`x+10-10 = 16-10\\x = 6`

So the side length of original photo is 6 inches. The dimensions will be 6 inches by 6 inches.

Hence,

The correct answer is:

6 inches by 6 inches