Simplify the following expression.
3x4 +2x - 5x2 + 4x2 +6x-2x-3x4 + 7x - 3x3

Hi! Alrighty this is a long one so here we go:

You first are going to want to find the like terms then add or subtract those together

3x^4 + 2x - 5x^2 + 4x^2 + 6x - 2x - 3x^4 + 7x - 3x^3

I made the like terms look like eachother if that makes any sense^

So subtract 3x^4 from 3x^4, which just cancels eachother out

2x - 5x^2 + 4x^2 + 6x - 2x + 7x - 3x^3

Now do the next ones which are the ones in bold (it doesnt matter which ones you do but these are the ones im doing)

So if you add those together, you now have

2x - 1x^2 + 6x - 2x + 7x - 3x^3

Add/subtract the bold ones again

13x - 1x^2 - 3x^3 is your answer!

Hope I helped have a good day :)

the right system of equations to describe the situation would

be on the form:

x1 = 8000 + y1*t

and

x2 = 8000 + y2*t

where x1 and x2 represents the total money of imogene and her

friend respectively at the end of t years.

now for the value of amount earned, y1 and y2:

y1=8000*0.08

y2=2000*√(t-2)

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6