dayrilins68 dayrilins68

27-09-2021
Mathematics

contestada

9. Y = X2 + 8X +16
A. TWO RATIONAL REAL SOLUTIONS
B. TWO IRRATIONAL REAL SOLUTIONS
C. TWO IMAGINARY SOLUTION
D. ONE REAL SOLUTION

Respuesta :

jimrgrant1 jimrgrant1

27-09-2021

Answer:

D

Step-by-step explanation:

y = x² + 8x + 16 ← is a perfect square

y = (x + 4)²

To obtain the solutions equate to zero

(x + 4)² = 0 , then

x + 4 = 0 ( subtract 4 from both sides )

x = - 4 ← one real solution

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