Several characters missing but I will hazard a gues and factorise
121x2 - 22x + 1 as (11x - 1)2
(11x-1)(11x-1)
We can't answer that without knowing what the polynomial is.
90
(x + 2)(3x + 1)
12
Start by looking for a common factor. Separate this factor, then factor the remaining polynomial.
To factor the polynomial ( x^3 - 3x^2 + x - 3 ), we first apply the Rational Root Theorem and test possible rational roots. After testing, we find that ( x = 3 ) is a root. Using synthetic division, we divide the polynomial by ( (x - 3) ) to obtain ( x^2 + 1 ). Thus, the complete factorization is ( (x - 3)(x^2 + 1) ).
13x(x+3x)
(x + 9)(x + 2)
-(x + 5)(x + 6)
5(x - 5)(x - 2)
Step 1: 2x.(x2 - 3x - 28) Step 2: 2x.(x - 7)(x + 4)