Question

2x^2 + 3x - 4 - x^2 +x +9

Answer 1

solving for x?

Answer 2

x^2+4 x+5

Answer 3

(x+4)(x-1) = x(x-1) + 4(x-1)
= x2 - x + 4x - 4
= x2 + 3x - 4

Answer 4

Example: what are the factors of 6x2 − 2x = 0 ?
6 and 2 have a common factor of 2:
2(3x2 − x) = 0
And x2 and x have a common factor of x:
2x(3x − 1) = 0
And we have done it! The factors are 2x and 3x − 1,

We can now also find the roots (where it equals zero):
2x will be 0 when x = 0
3x − 1 will be zero when x = 1/3
And this is the graph (see how it is zero at x=0 and x=1/3):