Activity lb. Write the following quadratic equations into standard form and identify the values of a, b and c on the space provided. 6. x27x=4 C 7. x(x + 2) = 1 9 9 9 9 8. x?x=0 11 9. (x + 2)(x - 2)=1 a: C 10. X? +9=0 a: b =​