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2 years ago

How do i simplify (x+5)^2 (2x-7)

Mathematics

1 answer:

Zarrin [17]2 years ago

4 0

(x+5)(x+5)
x^2+10x+25(2x-7)
2x^3+20x^2+50x-7x^2-70x-175= 2x^3+13x^2-20x-175

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-4(-3x - 8) - 4x + 8 = -8x + 40

Andrew [12]

First we expand and combine the terms on the left side. This gives us

12x + 32 -4x + 8 = -8x + 40

8x + 40 = -8x + 40. Because the two sides cancel each other out when you try and bring all the x to one side, the answer is x = 0.

3 0

2 years ago

Kate is saving to take an SAT prep course that costs $250, so far , she has saved $150, and she adds $10to her savings each week

matrenka [14]

Answer:

It will be ten weeks

Step-by-step explanation:

First you would need to find out what is 250 - 150 = 100 So they will need 100 dollars 100 divided by 10 is 10 so that will be 10 weeks

7 0

2 years ago

What is f(6) for the function f(x)=3x-8 a answer not here b -144 c -8 d 10

jonny [76]

Answer:

D. 10

Step-by-step explanation:

Given f(x)=3x-8

f(6)=3(6)-8

f(6)=18-8

f(6)=10

3 0

2 years ago

The midpoint of segment AB is (4, 2). The coordinates of point A are (2, 7). Find the coordinates of point B.

erastovalidia [21]

Answer:

<h3>The option B) is correct</h3><h3>Therefore the coordinate of B $(x_2,y_2)$ is (6,-3)</h3>

Step-by-step explanation:

Given that the midpoint of segment AB is (4, 2). The coordinates of point A is (2, 7).

<h3>To Find the coordinates of point B:</h3>

Let the coordinate of A be $(x_1,y_1)$ is (2,7) respectively
Let the coordinate of B be $(x_2,y_2)$
And Let M(x,y) be the mid point of line segment AB is (4,2) respectively
The mid-point formula is

Now substitute the coordinates int he above formula we get
$(4,2)=(\frac{2+x_2}{2},\frac{7+y_2}{2})$
Now equating we get

$4=\frac{2+x_2}{2}$ $2=\frac{7+y_2}{2}$

Multiply by 2 we get Multiply by 2 we get

$4(2)=2+x_2$ $2(2)=7+y_2$

$8=2+x_2$ $4=7+y_2$

Subtracting 2 on both

the sides Subtracting 7 on both the sides

$8-2=2+x_2-2$ $4-7=7+y_2-7$

$6=x_2$ $-3=y_2$

Rewritting the above equation Rewritting the equation

$x_2=6$ $y_2=-3$

<h3>Therefore the coordinate of B $(x_2,y_2)$ is (6,-3)</h3><h3>Therefore the option B) is correct.</h3>

7 0

2 years ago

How to solve this task???

Radda [10]

So (m+n)/2= 7

To find m+n, multiply both sides by 2
m+n=14

Final answer: C

3 0

3 years ago

Read 2 more answers