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sergij07 [2.7K]
2 years ago
8

Please answer. Find the difference by subtracting the second polynomial from the first. for 10 points!!!!!!!!!!!!!

Mathematics
1 answer:
stellarik [79]2 years ago
8 0

Answer:

-3x^3+x

Step-by-step explanation:

Let's first write the expression:

-3x+x^3-2x^2-(4x^3-2x^2-4x)

Now we can simplify. Be sure to remember to distribute the "-" to all the numbers in the parentheses. You can picture it like multiply "-1" to all the numbers in the parentheses to make it easier.

-3x+x^3-2x^2-4x^3+2x^2+4x

Now we combine like terms.

x-3x^3

Write the polynomials by decreasing exponents

-3x^3+x

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2(x + 4) = 4x + 3 – 2x + 5
melamori03 [73]

Answer:

x = infinite amount of solutions

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Algebra I</u>

  • Combining Like Terms

Step-by-step explanation:

<u>Step 1: Define Equation</u>

2(x + 4) = 4x + 3 - 2x + 5

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Distribute 2:                              2x + 8 = 4x + 3 - 2x + 5
  2. Combine like terms:                 2x + 8 = 2x + 8
  3. Subtract 8 on both sides:        2x = 2x
  4. Divide 2 on both sides:            x = x

Here we see that <em>x</em> does indeed equal <em>x</em>.

∴ x = infinite amount of solutions

8 0
3 years ago
Solve for x. 21/2x−3/4(2x+5)=3/8
Savatey [412]
Simplify \frac{21}{2}x
​2
​
​21
​​ x to \frac{21x}{2}
​2
​
​21x
​​
\frac{21x}{2}-\frac{3}{4}(2x+5)=\frac{3}{8}
​2
​
​21x
​​ −
​4
​
​3
​​ (2x+5)=
​8
​
​3
​​

2 Simplify \frac{3}{4}(2x+5)
​4
​
​3
​​ (2x+5) to \frac{3(2x+5)}{4}
​4
​
​3(2x+5)
​​
\frac{21x}{2}-\frac{3(2x+5)}{4}=\frac{3}{8}
​2
​
​21x
​​ −
​4
​
​3(2x+5)
​​ =
​8
​
​3
​​

3 Multiply both sides by 44 (the LCM of 2, 42,4)
42x-3(2x+5)=\frac{3}{2}42x−3(2x+5)=
​2
​
​3
​​

4 Expand
42x-6x-15=\frac{3}{2}42x−6x−15=
​2
​
​3
​​

5 Simplify 42x-6x-1542x−6x−15 to 36x-1536x−15
36x-15=\frac{3}{2}36x−15=
​2
​
​3
​​

6 Add 1515 to both sides
36x=\frac{3}{2}+1536x=
​2
​
​3
​​ +15

7 Simplify \frac{3}{2}+15
​2
​
​3
​​ +15 to \frac{33}{2}
​2
​
​33
​​
36x=\frac{33}{2}36x=
​2
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​33
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8 Divide both sides by 3636
x=\frac{\frac{33}{2}}{36}x=
​36
​
​
​2
​
​33
​​
​​

9 Simplify \frac{\frac{33}{2}}{36}
​36
​
​
​2
​
​33
​​
​​ to \frac{33}{2\times 36}
​2×36
​
​33
​​
x=\frac{33}{2\times 36}x=
​2×36
​
​33
​​

10 Simplify 2\times 362×36 to 7272
x=\frac{33}{72}x=
​72
​
​33
​​

11 Simplify \frac{33}{72}
​72
​
​33
​​ to \frac{11}{24}
​24
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​11
​​
x=\frac{11}{24}x=
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X=11 over 24
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