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dhananjaynagarkar
28.01.2020 •
Mathematics
1. solve the equation: 4x2 = 9
a. {3/2, -3/2}
b. {-2, -3}
c. no solution
d. {2/3, -2/3}
2. solve the following equation: x2 + 14x + 49 = 0
use {a,b} form. a and b are your solutions.
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Ответ:
⇒ x² = 9/4
⇒ x = {3/2, -3/2}
A is the answer.
x² + 14x + 49 = 0
x² + 2*7*x + 49 = 0
(x+7)² = 0
x = {-7, -7}
Hope it helps!
Ответ:
below
Step-by-step explanation:
First we need to find the domain.
x^2+ y^2 = 8
√x^2 + √y^2 = √8
x + y = ±2√2
So the domain is ±2√2. If you graph the circle you will see that it will in fact fail the vertical line test, mainly because its a circle. If you graph the domain onto the circle, you will see that it will have an affect on it being a relation. A graph will be shown below for a better reference. Keep in mind that ±2.828 is the decimal form of ±2√2.
Best of Luck!