3 years ago

Simplify the expression 2(x + 7)(x2 – 3x – 6).

Mathematics

2 answers:

Oksi-84 [34.3K]3 years ago

7 0

Answer:

2x^3+8x^2-54x-84

Step-by-step explanation:

ivolga24 [154]3 years ago

4 0

Answer:

2(x + 7)(x² - 3x - 6) = 2x³ + 8x² - 54x - 84

Step-by-step explanation:

Simplification is a method used to reduce the complexity or the component parts of an algebraic equation which makes it simpler and easier to understand.

The given equation is: 2(x + 7)(x² - 3x - 6).

Simplifying the given algebraic equation:

⇒ 2 (x + 7) (x² - 3x - 6)

⇒ (2x + 14) (x² - 3x - 6)

⇒ 2x³ + 14x² - 6x² - 42x - 12x - 84

⇒ 2x³ + 8x² - 54x - 84

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How do you determine which variable to substitute in for?

stira [4]

Answer:

Substituting for a Variable

If you know the value that the variable is equal to, you can substitute that value in for the variable in the expression! Let's look at an example. Since we know that x=5, we can directly substitute or replace the x in the expression x+3 with a 5 to solve for y!

Step-by-step explanation:

I hope this kinda helps

7 0

3 years ago

X^2- 2x - 54 = 0 I need the answer for this please

Kay [80]

x = -6, 8

Find the values of x by factoring, getting

(x - 8)(x + 6) = 0

5 0

3 years ago

Read 2 more answers