You mean "completing the square," don't you? ;)
<span>(x+7)(x-9)=25 can be expanded: x^2 - 9x + 7x - 63 + 25, which becomes
x^2 -2x = 38.
Let's now complete the square:
x^2 - 2x + (1)^2 - (1)^2 = 38, or x^2 - 2x + 1 = 39
Rewrite that as (x-1)^2 = 39
Take the sqrt of both sides: x-1 = plus or minus sqrt(39)
Write the roots: x = 1+sqrt(39) and x = 1 = sqrt(39) (answers)</span>
Answer:
asd
Step-by-step explanation:
aasdd
<h2><u>
PLEASE MARK BRAINLIEST!</u></h2>
Answer:
Honestly, if you think about it, the answer is right in front of you!
Step-by-step explanation:
The y- intercept is 3, and the x-intercept is 1. This means that the curve should have coordinate plots of (0,3) and (1,0).
The other information is not really needed if you know the x-and-y-intercepts!
There is only 1 curve that has the included intercepts, and that is the curve on option A)'s graph.
<h3>So your answer is option A)</h3>
I hope this helps and wasn't too confusing!
- sincerelynini
Answer:
°
Step-by-step explanation:
45/5 = 9
9 times 4 = 36
she bought the item at $36 dollars with a 20% discount