Factoring Trinomials: Equation factorization

$-x^2+13x-14=0$

What is the value of X?

$x_1=14,x_2=-1$

$2x^2+4x-6=0$

What is the value of X?

$x_1=1,x_2=-3$

The decomposition of the previous trinomial:

$x^2+2x+1=0$

is $(x+2)(x-1)$

Not true

$3x^2-12x=36$

What is the value of X?

$x_1=-2,x_2=6$

^{$2x^2+6x-7=x^2+2x-2$}

What is the value of X?

$x_1=-5,x_2=1$

$x^2-7x+21=3x$

What is the value of X?

$x_1=3,x_2=7$

$2x^2-16x=-30$

What is the value of X?

$x_1=5,x_2=3$

$x^2-10x-4=10-5x$

What is the value of X?

$x_1=7,x_2=-2$