Question

Factor: 3x^2 + 16 - 35

Answer 1

(x+2.5166) (x-2.5166)

Explanation:

consider,
a=3
b=0
c=16-35 = -19

as we know, for solving quadratic equation,
x= -b+/-(root(b^2-4ac)) / 2a = +/- 2.5166

Answer 2

(3x - 5)(x + 7)

Explanation:

I am assuming you mean:

3x^2 + 16x - 35

This =

3x^2 + 21x - 5x - 35

= 3x(x + 7) - 5(x + 7)

= (3x - 5)(x + 7)