tylerequitz tylerequitz

13-07-2022
Mathematics

contestada

What is the solution of √x+ 12 =
= x?
O x = -3
O x = 4
O x = -3 or x = 4
Ono solution
PLEASE HELP

Respuesta :

suspho9 suspho9

13-07-2022

Answer:

x₁ = 4

(x₂ = -3)

Step-by-step explanation:

√(x + 12) = x

x + 12 = x²

x² - x - 12 = 0

Δ = 49

x = (1 ±√Δ)/2

x₁ = 4

x₂ = -3

the right solution is 4 this can be seen by inserting the solutions found in the starting equation

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