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.