What side lengths should be used to model a rectangle with an area of x2 + 3x - 10 square units?

Question

Jagger Braun

Mathematics

8 February, 17:14

What side lengths should be used to model a rectangle with an area of x2 + 3x - 10 square units?

+2

Answers (2)

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Kayden Atkins · Answer 1

The area of a rectangle is A=ab, where a and b are the side dimensions.

So if you factor A, you will see what a and b are ...

x^2+3x-10

x^2-2x+5x-10

x (x-2) + 5 (x-2)

(x+5) (x-2)

So the sides have lengths of (x+5) and (x-2)

Gaven · Answer 2

The correct answer is x-2 and x+5 if you are on edgenuity