chris4560
chris4560 chris4560
  • 02-12-2019
  • Mathematics
contestada

When 4 is subtracted from the square of a number, the result is 3 times the number. Find the positive solution.

Respuesta :

aardvarknick231 aardvarknick231
  • 02-12-2019

Answer:

4

Step-by-step explanation:

The square of 4 is 16, or 4 times 4.

When you subtract 4 from it, it becomes 3 times 4.

Therefore, 4 is the answer.

Answer Link
Yang100
Yang100 Yang100
  • 02-12-2019

Answer:

The positive solution is 4.

Step-by-step explanation:

x^2-4=3x

x^2-3x-4=0

factor out the trinomial

(x-4)(x+1)=0

zero property,

x-4=0, x+1=0

x=0+4=4

x=0-1=-1

-------------

x=4, -1

Answer Link

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