Algebra

 

Fill in the blanks to make a quadratic whose roots are $1$ and $-1.$   
x^2 + ___ x + ___   

 

 

Since the roots are +1 and –1, the factors are (x – 1) and (x + 1)    

 

Multiplied together gives x² – 1   

 

So, the first space contains a     0    

the second space contains a    –1   

_.