Answer:
Step-by-step explanation:
If we look, "y" can be factored out of the entire expression because it goes into them all. This gives y(2x^3 - 4x^2 + 8x - 16)
Since everything inside the brackets is a multiple of 2 we can factor it out.
2y (x^3 - 2x^2 + 8x - 16)
Here to factor (x^3 - 2x^2 + 8x - 16) we could either use a calculator, or notice that when we subsitute 2 into the equation, it equals 0. Therefore (x - 2) must be a factor. The other factor must be (x^2 + 8) because:
(x - 2) ( )
We need to have 1 x^3 so we know the first part of the factor must be x^2
The also need to have -16 when we multiply this out, -2 * something equals -16. Meaning we must have 8 inside of the brackets.
This gives :
(x - 2) (x^2 + 8).
When we expand this out we get (x^3 - 2x^2 + 8x - 16)
Therefore in total we have
2y (x - 2)(x^2 + 8)
There are other methods of factorising (x^3 - 2x^2 + 8x - 16), so use the method which you have been taught in class or the one I used.
Answer:
D
Step-by-step explanation:
It is a trinomial with a degree of 3.
This is the correct answer on the exam.
Answer:
1,500,000,000
Step-by-step explanation:
First multipy the first digits, which are the ones that do not contain zero.
then put all of the zeros at the end, so product will be 1,500,000,000 because their are 8 zeros in total
if you check with calculator, you get 1,500,000,000
19 women + 81 men = 100 total
<u>x 2.5 </u> <u> x 2.5 </u> <u> x 2.5 </u>
47.5 women + 202.5 men = 250 total
Answer: 203 men (<em>rounded up from 202.5)</em>
The answer is c sorry if I am not correct
