Answer:

Step-by-step explanation:
2x² + 3x + 3 = 20
⇔ 2x² + 3x + 3 - 20 = 0
⇔ 2x² + 3x - 17 = 0
<u>Using the Quadratic Formula to solve a Quadratic Equation</u> :

In the equation 2x² + 3x - 17 = 0
a = 2 , b = 3 and c = -17
Then
b² - 4ac = 3² - 4×2×(-17)
= 9 + 8 × 17
= 9 + 136
= 145
Then
b² - 4ac > 0
Then

Then

Answer:1,706
Step-by-step explanation:
Add
Answer:7 2/35
Step-by-step explanation:
This is because of pemdas parenthesis exponents multiplication division addition and subtraction
Answer:
36.3
Step-by-step explanation:
145.2/4 = length of each side
145.2/4 = 36.3
Answer:
x=3.5
Step-by-step explanation: