3 years ago

The difference between a number and its square is 20. Find thenumbers.

Mathematics

1 answer:

Elena L [17]3 years ago

4 0

Answer:

-4 or 5

Step-by-step explanation:

let number be x

x²-x=20

Rearrange

x²-x-20=0

(x+4)(x-5)=0

Separate

x+4=0, x-5=0

x=-4 or 5

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D. $x=\frac{-4-\sqrt{31}}{3}$ or $x=\frac{-4+\sqrt{31}}{3}$

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3 years ago

The difference between a number and its square is 20. Find thenumbers.​

The difference between a number and its square is 20. Find thenumbers.