There is a quadratic equation of one variable about X, the sum of the coefficient of quadratic term and constant term is 7, and the coefficient of the first term is 3 less than that of the second term

There is a quadratic equation of one variable about X, the sum of the coefficient of quadratic term and constant term is 7, and the coefficient of the first term is 3 less than that of the second term

If the coefficient of quadratic term is a, then the coefficient of constant term is 7-a and the coefficient of primary term is A-3
ax^2+(a-3)x+(7-a)=0
As long as a is not zero
For example:
a=1
x^2-2x+6=0
a=2
2x^2-x+5=0

What is the sum of quadratic coefficient, linear coefficient and constant term of quadratic equation x ^ = - 2?

The coefficient of quadratic term is 1, the coefficient of primary term is 0, the coefficient of constant term is 2, and the sum is 3

On the equation of X (K-3) x ^ + 2x-1 = 0, when k__ It is a quadratic equation of one variable

On the equation (K-3) x ^ + 2x-1 = 0 of X,
When k ≠ 3, it is a quadratic equation with one variable

It is known that the quadratic equation of one variable (A-1) x2-2x + 1 = 0 has real roots (1) find the value range of a (2) please choose a non negative integer value of K and find the roots of the equation

(1) Topic meaning
△=4-4a+4=8-4a>=0∴a