Question

Use the technique of completing the square to transform the quadratic equation into the form (x + c)2 = a.

2x2 – 28x + 84 = 0

Answer 1

2x2 – 28x + 84 = 0
x2 - 14x +42 =0
x2 -14x + 49 - 49 = -42
(x-7)^2 = 7

Answer 2

thank you for the help

Answer 3

\[ 2x^2 – 28x + 84 = 0 \implies x^2-14x+42 = 0 \implies (x-7)^2=7\]

Answer 4

thank you to

Answer 5

yw