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2 years ago

Gcf difference of square (trinomials (xmethod) Help with math problem

Mathematics

2 answers:

Naddik [55]2 years ago

7 0

Answer:

Step-by-step explanation:

1. x = 2 1 2 , − 2 1 2

2. x = 0 , 2

3. x = 3 , 2

Kisachek [45]2 years ago

7 0

9514 1404 393

Answer:

A) difference of squares

B) GCF

C) trinomials (X method)

Step-by-step explanation:

When a binomial is a difference of squares, factoring using the "difference of squares" method is appropriate.

The first binomial is ...

(2x)² -5² . . . . . a difference of squares

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

When the binomial is not a difference of squares, but there is a common factor, then the GCF method is appropriate.

2x³ -4x² = 2x²(x -2) . . . . . GCF method

When the expression is a trinomial, often the X method can work for factoring it.

x²-5x +6 . . . . 2 numbers are needed that sum to -5 and are factors of 6

6 = (-2)(-3), so the factorization is (by X method)

(x -2)(x -3)

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Starlight tree farms sells douglas firs and noble first one December they sold 139 more douglas first than noble firs the total

Aloiza [94]

Part A:

Given that Starlight tree farms sells Douglas Firs and Noble First.

Let n be the number of Noble Fir trees sold, then if they sold 139 more Douglas First than Noble Firs, this means that the number of Douglas First trees sold is n + 139.

Given that the total number of trees sold was 377, then we have, n + n + 139 = 377, which means that 2n + 139 = 377

Therefore, the equation that could be used to solve for n, the number of Noble Fir trees sold is 2n + 139 = 377.

Part B:

Given that you are driving 55 miles per hour and you must drive a total of 440 miles. If you already driven 275 miles, then, the equation representing the number of hours, h, it will take to reach your destination is given by 55h + 275 = 440.

Subtracting 275 from both sides of the equation gives:

 $55h+275-275=440-275 \\ \\ \Rightarrow55h=165$

Dividing both sides by 55 gives:

 $\frac{55h}{55} = \frac{165}{55} \\ \\ \Rightarrow h=3$

Therefore, the time it will take you to reach your destination is 3 hours.

6 0

2 years ago

The point P(x, y) lies on the terminal side of an angle a = Ū in standard position. What are the signs of the values of x and y?

Akimi4 [234]

I think the answer is both x and y are positive

8 0

2 years ago

Shortern this expression pls

pogonyaev

Answer:

$c =\frac{8}{3}$

Step-by-step explanation:

Given

$c = \sqrt{\frac{4 + \sqrt 7}{4 - \sqrt 7}} + \sqrt{\frac{4 - \sqrt 7}{4 + \sqrt 7}}$

Required

Shorten

We have:

$c = \sqrt{\frac{4 + \sqrt 7}{4 - \sqrt 7}} + \sqrt{\frac{4 - \sqrt 7}{4 + \sqrt 7}}$

Rationalize

$c = \sqrt{\frac{4 + \sqrt 7}{4 - \sqrt 7} * \frac{4 + \sqrt 7}{4 + \sqrt 7}} + \sqrt{\frac{4 - \sqrt 7}{4 + \sqrt 7}*\frac{4 - \sqrt 7}{4 - \sqrt 7}}$