which of the following quadratic equations is NOT solvable by grouping

2x^2 - 2x - 10 = 0

x^2 - 12x + 35 = 0

2x^2 + 14x + 12 = 0

x^2 - 2x + 1 = 0

1 answer

The quadratic equation that is NOT solvable by grouping is x^2 - 2x + 1 = 0.