Given quadratic equation : 
Let us apply standard quadratic form 
We know, quadratic formula

a = 4
b = 2
c= -1
Now we plug in all the values in quadratic formula
.
<h3>The above one is the substitution of values of a,b,c in quadratic formula.</h3>
The slope is the number in front of the x when y is on the side by itself.
Slope = -1/2
To solve 1-20, you plug in the number for the variable that the variable is equal to e.i. a) x = -3 so you plug -3 in every place there is an x
-2(-3)^2 - 3(-3) + 1
-2(9) +9 + 1
-18 +10
-8
The solution to a) is -8.
Please leave a comment and let me know if you also need help with b-d or if you understand.
The answer is in the image below.
Hope this helps!!!!!!!
Please give me brainliest!!!!!!!
Answer:
Question 1: DE is congruent to GH
Question 2: angle-side-side
Question 3: 153
Question 4: the first choice
Question 5: 26
Step-by-step explanation: