3 years ago

Which method could be used to factor x2 - 25?

Mathematics

2 answers:

butalik [34]3 years ago

8 0

Answer:

Step-by-step explanation:

a² - b² = (a + b)(a - b)

x² - 25 = x² - 5² = (x + 5) (x - 5)

Mandarinka [93]3 years ago

6 0

Answer:

A. Perfect square Trinomial

Step-by-step explanation:

Just did its

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-8x-27=-7\left(1+2x\right)+2x

Darina [25.2K]

Answer:

$x=5$

Step-by-step explanation:

$-8x-27=-7\left(1+2x\right)+2x$

Expand:

$-8x-27=-7\times 1-7\times 2x+2x$

$-8x-27=-7-12x$

Add 27 to both sides:

$-8x-27+27=-7-12x+27$

$-8x=-12x+20$

Add 12x to both sides:

$-8x+12x=-12x+20+12x$

$4x=20$

Divide both sides by 4:

$\frac{4x}{4}=\frac{20}{4}$

$x=5$

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The solution is (-4, -1

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aksik [14]

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3 years ago

How many unique ways are there to arrange the letters in the word APE

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Step-by-step explanation:

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How do you solve 3 (x - 4) = 12?<br> I'm really stuck on these type of questions

jolli1 [7]

Answer:

Step-by-step explanation:

Here you go mate

Use PEMDAS

Parenthesis,Exponent,Multiplication,Division,Addition,Subtraction

Step 1

3(x-4)=12 Equation/Question

Step 2

3(x-4)=12 Remove parenthesis

3x-12=12

Step 3

3x-12=12 Add 12 to sides

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Step 4

3x=24 Divide sides by 3

answer

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Hope this helps

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3 years ago