The characteristics of polynomials in the form of x2 + (P + Q) x + PQ are: 1. The coefficient of quadratic term is 1; 2. The constant term is the product of two numbers; 3 The characteristics of polynomials in the form of x2 + (P + Q) x + PQ are: 1. The coefficient of quadratic term is 1; 2. The constant term is the product of two numbers; 3. The coefficient of quadratic term is just the sum of two factors in the constant term, for example, X2 + 3x + 2 = (x + 1) (x + 1). Please decompose the factor according to the method in the above material: A2 + 9a-22

The characteristics of polynomials in the form of x2 + (P + Q) x + PQ are: 1. The coefficient of quadratic term is 1; 2. The constant term is the product of two numbers; 3 The characteristics of polynomials in the form of x2 + (P + Q) x + PQ are: 1. The coefficient of quadratic term is 1; 2. The constant term is the product of two numbers; 3. The coefficient of quadratic term is just the sum of two factors in the constant term, for example, X2 + 3x + 2 = (x + 1) (x + 1). Please decompose the factor according to the method in the above material: A2 + 9a-22

a2+9a-22=（a+11)(a-2)
Because P + q = 9
pq=22
We can calculate the specific values of P and Q, and then substitute them