Question

x² + 4x - 12 = 0 
Solve the equation by completing square method​

Answer 1

Answer:

=x2+4x-12=0

=x2+2×2x+2^2-2^2-12=0

=(x+2)^2=16

::(x+2) =+-4

::x=2,;-6

Answer 2

Answer:

x² + 4x - 12 = 0

Completing square method:-

x² + 4x + 4 - 4 - 12 = 0 ......{ (4/2)² = 4}

(x² + 4x + 4) - 4 - 12 = 0

(x + 2)² - 16 = 0

(x + 2)² = 16

x + 2 = √16

x + 2 = + - 4

x = 2 + 4 or x = 2 - 4

x = 6 or x = -2 ✅