SOLUTION: (2x-1)(3x+5)=5 The answer it shows is -2, 5/6 I am not sure how they got this answer?

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Question 163139This question is from textbook Elementary and Intermediate
: (2x-1)(3x+5)=5
The answer it shows is -2, 5/6 I am not sure how they got this answer? This question is from textbook Elementary and Intermediate

Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!

%282x-1%29%283x%2B5%29=5
expand,(multiply)
6x%5E2-3x%2B10x-5-5=0
6x%5E2%2B7x-10=0
Remember ----system%28a=6%2Cb=7%2Cc=-10%29
By Quadratic:
x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29
x=%28-7%2B-sqrt%287%5E2-4%2A6%2A-10%29%29%2F%282%2A6%29
x=%28-7%2B-sqrt%2849%2B240%29%29%2F12
x=%28-7%2B-sqrt%28289%29%29%2F12=%28-7%2B-17%29%2F12
2 values:
x=%28-7%2B17%29%2F12=10%2F12=highlight%285%2F6%29
x=%28-7-17%29%2F12=-24%2F12=highlight%28-2%29
As it was shown right?
Thank you,
Jojo