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Sauron [17]
3 years ago
11

If the area rectangle below us 39 square feet find the x value

Mathematics
1 answer:
Leya [2.2K]3 years ago
7 0

Answer:

x=5 and x=-11

Step-by-step explanation:

(x-2)(x+8)=39

x^2+6x-16=39

Subtract 39 from both sides

x^2+6x-55=0

Factor:

(x-5)(x+11)=0

Set factors to 0.

x-5 =0

x+11 =0

x=5, x=-11

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