I need more info to answer this
Answer: The third option, O 2x²+7x-4
Step-by-step explanation:
We can use the "FOIL" method. We take the following four sets, multiply them together, then add them for our final answer.
-> first
-> last
-> inner
-> outer
What does this look like mathematically?
-> first = (<u>2x</u> - 1)(<u>x</u> + 4) = 2x * x = 2x²
-> last = (2x <u>- 1</u>)(x <u>+ 4</u>) = -1 * 4 = -4
-> inner = (2x <u>- 1</u>)(<u>x</u> + 4) = -1 * x = -x
-> outer = (<u>2x</u> - 1)(x + <u>4</u>) = 2x * 4 = 8x
-
2x² - 4 - x + 8x
2x² + 7x - 4
O 2x²+7x-4
200% increase because to get percent you do
80,000 * x/100 = 160,000
to find x you must
x/100 = 160000/80000
x/100 = 2
x = 200
so there was a 200% increase
When you FOIL it out, you get
9u² + 48uv + 64v² .
and that's IT.
There's only one way to simplify that expression.
Let's be honest with each other. If we were given
9u² + 48uv + 64v²
and asked to simplify it, we would write it as (3u + 8v)²
just as fast as we could !
I believe it is 65% because you add 25% and 10% together then subtract from 100, because percent means per 100. So, sorry if I am wrong.
