X^2 + 8x + 16 = 1

Question

Square root property

 

Answer 1

Deborah,

 

This polynomial is a perfect square.

 

x²+8x+16=1

(x+4)²=1    [This is the factored form of the original polynomial]

x+4=+/- sqrt(1)  [You have to include the +/- because both 1² and (-1)² equal 1]

x=-4+/-1

x=-3,-5

 

I hope this helps.

Norm