Question

X2-4x+9=0 complete the square​

Answer 1

(x-2)^2=-5

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!