Question

What is the solution to 2x²+8x=x²-16? O x=-4 O x=-2 O x=2 Ox=4

Answer 1

2x²+8x=x²-16

2x²-x²+8x+16=0

x²+8x+16=0

D=b²-4ac

=8²-4×1×16

=64-64

=0

x= -b+VD / 2a

=-8+V0 /2

= -8/2

=-4