Which of the following quadratic equations can be solved by grouping?(1 point) Responses x2+10x+21=0 x squared plus 10 x plus 21 equals 0 x2−4x−8=0 x squared minus 4 x minus 8 equals 0 x2+8x−22=0 x squared plus 8 x minus 22 equals 0 x2−12x+18=0

Answer 1

The quadratic equation that can be solved by grouping is:

x2−12x+18=0