Question

How do you solve using the completing the square method `4x^2 + 20x + 25 = 49`?

Answer 1

Solution `x=1; x= -6`

Explanation:

`4x^2+20x+25=49 or (2x+5)^2=7^2 or 2x+5 = +-7 :. either 2x=7-5=2:.x=1 or 2x= -7-5:.x= -6:.`Solution `x=1; x= -6`[Ans]