Answer:
Factoring.
General Formulas and Concepts:
<u>Algebra I</u>
- Factoring
- Finding roots of quadratics
Step-by-step explanation:
<u>Step 1: Define</u>
y = 2x² - 6x - 8
0 = 2x² - 6x - 8
<u>Step 2: Find roots</u>
- Factor 2: 0 = 2(x² - 3x - 4)
- Factor: 0 = 2(x - 4)(x + 1)
- Find roots: x = -1, 4
And we have our final answer!
Answer:
D
Step-by-step explanation:
Hope I helped good wap
Answer:
Look the square root up on the internet.
Step-by-step explanation:
3x - 15 = 39
+ 15 +15
3x = 54 (divide by 3 on each side)
X = 18
The product of two even numbers is even.
Let m and n be any integers so that 2m and 2k are two even numbers.
The product is 2m(2k) = 2(2mk), which is even.
Things to think about:
Why didn’t I just show you by using any two even numbers like the number 4 and the number 26?
Why did I change from "m" to "k" ? Are they really different numbers or could they be the same?
Why did I specifically say that m and k were integers?
The product of two odd numbers is an odd number.
Let m and k be any integers. This means that 2m+1 and 2k+1 are odd numbers.
The product is 4mk + 2m + 2k + 1 (hint: I used FOIL) which can be written as
2 ( 2mk + m + k ) + 1 which is an odd number.
