ohmylordfrederick ohmylordfrederick
  • 31-07-2019
  • Mathematics
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x2-4x+9=0 complete the square​

Respuesta :

absor201
absor201 absor201
  • 31-07-2019

Answer:

(x-2)^2=-5

Step-by-step explanation:

Given:

x2-4x+9=0

writing 9 as 4+5 also 4x as 2(x)(2)

x2-2(x)(2) + 4 +5 =0

x2-2(x)(2) + (2)^2 +5 =0

As per (a-b)^2 = a2-2ab+b2:

(x-2)^2+5=0

(x-2)^2=-5!

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