Write out the coefficient of quadratic term, coefficient of first term and constant term of quadratic function Coefficient of quadratic term and constant term of coefficient of primary term in function expression y=x2-2x-1 y=3x2+5 y=3x-1/2X2 y=2(x-1)(x+2) Y = (x-radical 2) 2-1

Write out the coefficient of quadratic term, coefficient of first term and constant term of quadratic function Coefficient of quadratic term and constant term of coefficient of primary term in function expression y=x2-2x-1 y=3x2+5 y=3x-1/2X2 y=2(x-1)(x+2) Y = (x-radical 2) 2-1

2 -2 -1
3 0 5
-1/2 3 0
2 2 -4
1 0 -1