Need help ?

Question

917 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-05-16T03:39:21

$x = 7$ $x=7$

.

$x^{2} - 14 x + 49 = 0$ $x^2-14x+49=0$

You can solve this either by factoring or using the quadratic formula.

This quadratic is factorable. We need to think of two number such that:

If you multiply them together we will get $49$ $49$

And if we add them together algebraically we will get $- 14$ $-14$ .

The numbers are $- 7$ $-7$ and $- 7$ $-7$ . Therefore,

$(x - 7) (x - 7) = 0$ $(x-7)(x-7)=0$

$x - 7 = 0$ $x-7=0$

$x = 7$ $x=7$