• October 7th 2011, 06:27 AM
andyboy179
hi,

i have to work this out, its a quadratic equation:

x^2+8x+16=0
would the brackets be - (x+4) (x+4) because 4x4=16 and 4+4=8???

thanks
• October 7th 2011, 07:05 AM
Siron
Indeed:
$x^2+8x+16=0 \Leftrightarrow (x+4)(x+4)=0 \Leftrightarrow (x+4)^2=0$
• October 7th 2011, 04:12 PM
mr fantastic
Quote:

Originally Posted by andyboy179
hi,

i have to work this out, its a quadratic equation:

x^2+8x+16=0
would the brackets be - (x+4) (x+4) because 4x4=16 and 4+4=8???

thanks