Answer:
option 2. 0
Step-by-step explanation:
The discriminant is the part under the square root in the quadratic formula, b²-4ac. If it is more than 0, the equation has two real solutions. if it is 0, the equation has one real solutions. if it is less than 0, the equation has zero real solutions.
-b√b²-4ac /2a
This is because the square root of a negative number cannot give a real number, it will always give an imaginary number
If the triangles are similar, the proportion of the legs on the left to the legs on the right will be equal. This proportion would look like:
(You needed to combine the orange segment and the yellow segment to find the total length of the large triangle).
Now, cross multiply and solve for x:
28x+14=30x
<em>*Subtract 28x from both sides to isolate the variable*</em>
14=2x
<em>*Divide both sides by 2*</em>
7=x
Hope this helps!!