Answer:
<h3>lets create equation first then to solve it</h3>
.
Step-by-step explanation:
5+8+a=20
<h3>lets solve it.</h3>
5+8+a=20
13+a=20
a=20-13
a=7.
<h3>maybe it will be correct.</h3>
Answer:
-2
Step-by-step explanation:
This is the process of completing the square.
Keep this equation in mind:
Basically, to make this a perfect square trinomial, you take half of b and square that value. This will make it so you can compress the left side of the equation into
depending on the sign in the middle of the original equation.
Answer:
768
Step-by-step explanation:
this is the answer