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3 years ago

X²-4 this is the difference of square help please

Mathematics

1 answer:

fenix001 [56]3 years ago

3 0

Answer:

(x - 2)(x + 2)

Step-by-step explanation:

If this is a difference of squares, it factors like this.

(x - 2)(x + 2)

The general rule is x^2 - a^2 factors into sqrt(x^2) +/- sqrt(a^2)

That always produces 2 factors: (x + a)(x - a)

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Ayuda mee no like fr m

den301095 [7]

Answer:

I believe its option c 6

Step-by-step explanation:

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3 years ago

What’s the greatest common factor of 12x^2+9x^3-6x^4

VikaD [51]

$12x^2+9x^3-6x^4\\\\LCD(12,\ 9,\ 6)=3\\\\LCD(x^2,\ x^3,\ x^4)=x^2\\\\12x^2=(3x^2)(4)\\9x^3=(3x^2)(3x)\\-6x^4=(3x^2)(-2x^2)\\\\GCF\ of\ 12x^2+9x^3-6x^4\ is\ equal\ \boxed{3x^2}\\\\12x^2+9x^3-6x^4=(3x^2)(4+3x-2x^2)$

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3 years ago

What is 3(x+3)+7x= ?

Hitman42 [59]

Answer:

10x+9

Step-by-step explanation:

You first have to multiply 3 into the parenthesis because you have to use distributive property.

Once you do that you get 3x+9+7x.

Combine like terms.

10x+9

6 0

3 years ago

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Is a – b a positive number or a negative number? How do you know?

Ganezh [65]

Answer:

A positive number.

Any negative subtracted from a positive will always be positive.

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3 years ago

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What is the median of 1, 3, 6, 8, 9, 9<br> Answer choices: A. 6<br> B. 7<br> C. 8<br> D. 9

luda_lava [24]

Answer:

Step-by-step explanation:

The median is the middle value of the data arranged in ascending order. If there is no exact middle value then it is the average of the values either side of the middle.

1, 3, 6, 8, 9, 9

↑ middle

median = $\frac{6+8}{2}$ = $\frac{14}{2}$ = 7 → B

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3 years ago

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