Solve the quadratic equation x2 + 16x = -64 by factoring.
A.{2, 4}

B.8
C.{-8, 8}
D.-8

Question

Solve the quadratic equation x2 + 16x = -64 by factoring. 
A.{2, 4}  
  
B.8  
C.{-8, 8}  
 D.-8

superdavesuper · Answer

Try adding 64 to both sides of the equation and you will get...

anonymous · Answer

x2 + 16x = -64
        +64     +64
x2nd+16x+64=0
      (x+8)(x+8)=0
(x+8)=0 (x+8)=0
x=-8       x=-8

anonymous · Answer

make sure to set the problem = to 0 also - or + any like terms then find what times what would give you 64 but add up to 16. you also want to make sure that if its + and + such as +16x+64 then the number multiplied would be a + number but it if its - and + then one number would be - and the other would be +.

anonymous · Answer

after you find what the number or numbers are, set them equal to 0 like i did there (x+8)=0 (x+8)=0 the answer would be the opp of what there sign would be so x=-8 and x=-x

anonymous · Answer

oops i mean x=-8 and x=-8