An obtuse triangle is formed if there is an angle that has a measure of more than 90 degrees. You can determine if an obtuse angle is formed by two sides of a triangle if it meet this condition:
Let a and b be two sides of a triangle and c is the longest side:

So taking your given:

<

100 + 225 <

325 <

To get the smallest possible number, just get the square root of both sides:

<

18.03 < c
So your smallest possible whole number is 19
I think the it would be some like y-8
1-5q+ 2(2.5q+8)
1-5q+5q+16
0+15
15
(The q goes away because in addition a negative and a positive of the same # equal 0 since its 0 there is no letter)
(2x²+6x-8)(x+3)
2x²*x=2x³
2x²*3=6x²
6x*x=6x²
6x*3=18x
-8*x=-8x
-8*3=-24
6x²+6x²=12x²
18x-8x=10x
<span>2x³+12x²+10x-24</span>