(3x^5 + 8x^3) - (7x^2 - 6x^3) = 3x^5 + 8x^3 - 7x^2 + 6x^3 = 3x^5 + 14x^3 - 7x^2
Answer:
19
Step-by-step explanation:
1. r(-3) is just plugging in -3 into the r(x) function where ever we see x.
1a. r(-3)=-2(-3)^2+1=-17
2. We are left with q(-17).
2a. We plug -17 into where we x in q(x).
3. q(-17)=-(-17)+2=19
Answer:
a = 1
Step-by-step explanation:
(x²+x-1)(x-1) = x³+x²-x-x²-x+1 = x³-2x+1
Answer:
1.90
Step-by-step explanation:
You would want to use a calculator since you need decimal places.
Once you type it into the calculator you should get 1.8952380952.
Since you're trying to simplify to the second decimal place, look at the third number after the decimal.
The 5 rounds up the 9 to a ten, which is represented by the 0.
That then turns the 8 into a nine.
Distribute the first set of parenthesis
<span><span>15<span>r<span><span>2</span><span></span></span></span>−20r+6r−8</span><span>
Combine like terms
</span><span><span>15<span>r<span><span>2</span><span></span></span></span>+(−20r+6r)−8</span><span>
Simplify your answer
</span><span>15<span>r<span><span>2</span><span></span></span></span>−14r−8
*Answer is </span>15r^2−14r−8*<span><span>
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