Hello there!
A C method : you multiply the A and C -> find the factors of AC that can add up to B. (a² + bx + c)
15a² + 14a - 8
you multiply 15 and -8 = -120
Find the two factors of -120 that adds up to 14.
We could used 20 and -6.
So we can split the original equation to this:
15a² + 20a - 6a - 8
Now, we use grouping method.
Let's group 15a² + 20a and -6a - 8.
15a² + 20a can be factored like this :
5a(3a + 4)
-6a - 8 can be factored like this :
-2(3a + 4)
So it is 5a(3a + 4) × -2(3a + 4)
We can simplify this into this :
(5a - 2)(3a + 4)
So your final answer is (5a - 2)(3a + 4).
Hope this helped! :)
Answer:
The number of dimes is 3n - 8
Step-by-step explanation:
Here, we are interested in writing an expression for the number of dimes.
We proceed as follows;
Now, there are n nickels with the number of dimes been 8 less than 3 times the number of nickels
That would be;
3(n) -8 = 3n -8
Answer:
Step-by-step explanation:
8(p+7)
=8p+8*7
=8p+56
Answer:
It will take 11.10 year to triple the population
Step-by-step explanation:
We have given that initial population is 
It is given that population is doubled in 7 years
So 
r = 10.40 %
So rate of increasing the population will be 10.40 %
Now we have to find the time in which population is 3 times
So new population 
So 
Taking log both side
n = 11.10 year
So it will take 11.10 year to triple the population
Answer:
<h2>x = 8</h2>
Step-by-step explanation:
