Answer:
21y^2+11.2
Step-by-step explanation:
4-3y(-7y)+7.2
combine like terms
-3y (-7y) = 21y^2
add 4 to 7.2
11.2
21y^2 + 11.2
The solution to the system of equation is (7/5, 22/5)
<h3>System of equation</h3>
Given the system of equation as shown below;
4x + y = 10 * 2
3x - 2y = 13 * 1
_____________
8x + 2y = 20
3x - 2y = 13
Subtract
8x - 3x = 20 - 13
5x = 7
x = 7/5
Substitute the value of x into any of the equation
4x + y = 10
4(7/5) + y = 10
28/5 + y = 10
y = 10 - 28/5
y = 22/5
Hence the solution to the system of equation is (7/5, 22/5)
Learn more on system of equation here: brainly.com/question/25976025
#SPJ1
Answer:
5 and –8 are solutions.
Step-by-step explanation:
8 is a solution to the original equation. The value –5 is an extraneous solution.
5 and 8 are both extraneous solutions.
5 is a solution to the original equation. The value –8 is an extraneous solution.
