Question

2. Roots of the quadratic equation x2 - 1 point
16X+ 63 =O are
*
9 and -7
O -9 and 7
O O O
-9 and -7
9 and 7​

Answer 1

x²-1=0

=>x²=1

=>x=1

1 is the zero of the polynomial x²-1

16x+63=0

=>16x= -63

=>x= -63/16