Respuesta :

mhanifa

Answer:

  • 4² = 16

Step-by-step explanation:

  • x² + 8x = 6
  • x² +2*x*4 + 4² = 6 + 4²
  • (x + 4)² = 22

Number needed is 4² = 16

msm555

Answer:

Solution given:

x² + 8x =6

x²+2.x.4+4²-4²=6

(x+4)²=6+16

(x+4)²=22

so

no needed is 4² or 16.

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