Answer:-9, 1/10
Step-by-step explanation:quadratic formula
1：13x-14
2:-6x+21
3: 20x-18
4:5x+15
5:14n+36
6:-12n+17
7:8n+32
8:k-11
9:-7k+37
10:-13k+34
11:2k+7
12:x+52
13:-2x+21
14:3x+21
15:12y-11
16:-26u+25
17:-42u+42
18:13u-7
Step-by-step explanation:
5√7 + 12√6 - 10√7 - 5√6
Write it like this:
(12√6 - 5√6) + (5√7 - 10√7),
as the 12 and 5 are both being multiplied by √6, they can be added or subtracted and its the same with 5 and 10, so it becomes:
7√6 - 5√7
You should leave it like this.
