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Scilla [17]
3 years ago
10

(4). Simplifying polynomials, help pls:) brainliest involved

Mathematics
1 answer:
Roman55 [17]3 years ago
5 0

Answer:

Explanation:

To simplify a polynomial, we have to do two things: 1) combine like terms, and 2) rearrange the terms so that they're written in descending order of exponent.

First, we combine like terms, which requires us to identify the terms that can be added or subtracted from each other. Like terms always have the same variable (with the same exponent) attached to them. For example, you can add 1 "x-squared" to 2 "x-squareds" and get 3 "x-squareds", but 1 "x-squared" plus an "x" can't be combined because they're not like terms.

Let's identify some like terms below.

f(x)=−4x+3x2−7+9x−12x2−5x4

Here you can see that -4x and 9x are like terms. When we combine (add) -4x and 9x, we get 5x. So let's write 5x instead:

f(x)=5x+3x2−7−12x2−5x4

Let's do the same thing with the x-squared terms:

f(x)=5x+3x2−7−12x2−5x4

f(x)=5x−9x2−7−5x4

Now there are no like terms left. Our last step is to organize the terms so that x is written in descending power:

f(x)=−5x4−9x2+5x−7

Step-by-step explanation:

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I need help with this question. The directions say to evaluate and express the answer in the simplest form.
topjm [15]

Answer:

<h2>1/243</h2>

Step-by-step explanation:

(9)^-5/2

In order to get rid of the negative exponent, take the reprocal of 9/1

⇒(\frac{1}{9})^5/2

\frac{1^\frac{5}{2} }{9\frac{5}{2} }⇒This is also the same thing but we’re are breaking it down.

\frac{(1^{\frac{1}{2})^{5} } }{(9\frac{1}{2})^{5} }⇒We are further breaking this down...

^\frac{1}{2} is technically the square root of a number.

\sqrt{1}^{5}=1

\sqrt{9}^{5}=243

I’m only 8 years old ;-;

8 0
3 years ago
Mr. Robinson has raised $900 for his St. Baldricks campaign to fund childhood cancer research. This is 60% of his fundraising go
Alexus [3.1K]

Answer:

1500

Step-by-step explanation:

STEP 1 900 = 60% × Y

STEP 2 900 =

60

100

× Y

Multiplying both sides by 100 and dividing both sides of the equation by 60 we will arrive at:

STEP 3 Y = 900 ×

100

60

STEP 4 Y = 900 × 100 ÷ 60

STEP 5 Y = 1500

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Step-by-step explanation:

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