Let's solve ~
I hope you understood the procedure, please let me know if you have any doubts
Completing the square
alrighty
minus 31 both sides
x²+12x=-31
take 1/2 of the linear coefient and square it
12 is the linear coefient
12/2=6, (6)²=36
add that to both sides
x²+12x+36=36-31
factor perfect square trinomial
(x+6)²=5
square root both sides, remember to take positive and negative root
x+6=+/-√5
so what you want to write is
x+6=√5 and
x+6=-√5
the solutions
minus 6 both sides
x=-6+√5 and -6-√5
Answer:
67-63x
Step-by-step explanation:
Answer:
f 1 pound on Earth is equal to 1.19 pounds on Neptune all you have to do is multiply the number of Earth pounds by their Neptunian equivalent: 9x1.19=10.71 the dog would weigh 10.71 pounds :) I hope this makes sense :)
Find the distance between points A-2; 3, B2; 1:
d = √<span>(<span>xb</span> - <span>xa</span>)2 + (<span>yb</span> - <span>ya</span>)2</span> =
= √<span>(2 - (-2))2 + (1 - 3)2</span> =
= √<span>42 + (-2)2</span> = √16 + 4 =
<span>= <span>√20</span><span><span> </span></span></span>
