Expand & simplify: (x + 1)(x + 3)
2 answers:
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Answer:
3.
If you were to “unroll” a can of soup, you would end up with two circles and one rectangle.
Thats why when you are finding the surface area of a cylinder, you need to multiply the area of the circle by 2. And also you need to find the area of the rectangle. Then you add the areas all up.
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