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miss Akunina [59]
4 years ago
13

Factor x^2+7x+10=0 plz

Mathematics
1 answer:
Musya8 [376]4 years ago
6 0

Given:

x^2+7x+10=0

Since the quadratic equation is equal to 0, we need to solve for x. Let's factor. Since a ≠ 1, we can easily solve. We need to find out what factors of 10 add up to 7. I know that 5*2 = 10 and 5+2 = 7. This fits out problem perfectly. Now that we have that, we can simplify it into two binomials:

(x+2)(x+5)

Now, if it was not equal to zero, we would be done. However, we are not done. We need to set both terms equal to 0 to solve for x.

x+2=0

To isolate x, subtract 2 from both sides to cancel the +2 on the left.

x=-2

Let's do the other one:

x+5=0

Same thing, subtract 5 from both sides to isolate x.

x=-5

So, in conclusion, your solutions are:

x=-2

x=-5

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What is (x+5)+2x^2=2x+1
andrew-mc [135]

Answer:

Step-by-step explanation:

Area of Square = (x+5)²= x² + 10x + 25

Area of rectangle = 2x  * x  = 2x²

area of rectangle + 1 = Area of square

 2x² + 1 = x² + 10x +25

2x² + 1 - x² - 10x - 25 = 0

x²  - 10x - 24 = 0

(x - 12) (x + 2) = 0

x - 12 = 0   ;   Ignore x + 2  because length wont come in negative

x = 12

5 0
4 years ago
Read 2 more answers
Geometric sequence -1, -5, -25, -125 the 9th term
Anna [14]
A9th = -1* 5^(n-1)

a9th = -1*5^(9-1)
a9th = -1*5^(8)
a9th = -390625

Hope this helps!
4 0
3 years ago
Who’s some good nice people that want personal help with math
Sergeeva-Olga [200]

Answer:

Share!

Step-by-step explanation:

Well, if you share Brainly with others, they might want help and you can help your friends and family!


And, you can also become friends with somebody and then help them.


Hope this gives you some ideas!

8 0
4 years ago
Evan cut a triangular piece of cloth to use in a quilt. The perimeter of the cloth is 934 cm. The base of the triangular cloth i
qwelly [4]
2s = 934 - 214
Step-by-step explanation:
Let the two equal sides of the triangle be s
Perimeter = 934
s +s + 214 = 934
2s + 214 = 934
2s = 934 - 214
7 0
3 years ago
Please Help!!<br> Show all work pls! <br> #15
MrRissso [65]

Step-by-step explanation:

82 + 76 + 42 = 200

42 out of 200 hmmm

200 / 2 = 100

42 / 2 = 21

21 out of 100 = 42 out of 200

=

21%

7 0
4 years ago
Read 2 more answers
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