Question

Er

5 ~ Challenge: Iris is considering adding a vegetable
garden in her yard. She has a square space with an
area of 25x2 + 40x + 16. Find an expression to
represent the side lengths of the possible vegetable
garden. Sketch her vegetable garden.
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ual
ermine
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How?

Answer 1

(5x+4)x(5x+4)

Explanation:

Factor using quadratic formula (or AC method if you prefer)

formula: [-b ±
`\sqrt{b^(2) -4ac}`]/2a

Plug in

[-40 ±
`√(1600-1600)`]/2(25)

-40/50

x=-4/5

But since we need to find the factored form we put everything on one side.

5x+4=0

Since there is no ±, that means that there is perfect square. Both sides would be 5x+4