Question

(X+4)^2-25=0
Find the zeros of the function

Answer 1

x = -9, 1

Explanation:

(X+4)^2-25=0

Add 25 to each side

(X+4)^2-25+25=0+25

(X+4)^2=25

Take the square root of each side

sqrt((X+4)^2)=±sqrt(25)

x+4 = ±5

Separate into 2 equations

x+4 =5 x+4 =-5

Subtract 4 from each side

x+4-4=5-4 x+4-4 =-5-4

x=1 x=-9