4 x^2 + 20 x + 25 = 7
Divide both sides by 4:
x^2 + 5 x + 25/4 = 7/4
Write the left-hand side as a square:
(x + 5/2)^2 = 7/4
Take the square root of both sides:
x + 5/2 = sqrt(7)/2 or x + 5/2 = -sqrt(7)/2
Subtract 5/2 from both sides:
x = sqrt(7)/2 - 5/2 or x + 5/2 = -sqrt(7)/2
Subtract 5/2 from both sides:
Answer: x = sqrt(7)/2 - 5/2 or x = -5/2 - sqrt(7)/2
Answer:2
Step-by-step explanation:
Answer:
C.
Step-by-step explanation:
Simply multiply 50 by 3/8
Step-by-step explanation:
- 1 plain chocolate and 1milk chocolate
- 1 plain chocolate and 1 white chocolate
- 1 milk chocolate and 1 white chocolate
<h3>we have to it like that only right??</h3>
Answer: 26
Step-by-step explanation:
