x2-13x+30

That expression can be factored to
(x-10)(x-3)

If you had written the equation,
x2-13x+30 = 0
you could now say what x is, but you didn't.

So that's about as far as I can go wth your question.

i think it islike thisx2-13x+30=x2-10x+3x+30=x(x-10)-3(x-10)=(x-3)(x-10)

5x2+13x+6