Answer:

Step-by-step explanation:
The equation given is:

Using quadratic formula:

From the question:
a = 2, b = -4, c = 7
Therefore:

=> 

<em>16+y=24, What is y?</em>
<em />
<em />
When solving an equation, we need to make sure that all variables are on one side and all numbers are on the other side.
Since we have numbers on both sides, we need to move all of them to one side:-



<h3>Good luck with your studies.</h3>

Answer:
f(7)=58
b(-2)-a(12)=-188
Step-by-step explanation:
f(7)=(7)^2+9
49+9
f(7)= 58
b(-2)-a(12)=8(-2)-14-13(12)-2
-16-14-156-2
=-188