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Readme [11.4K]
2 years ago
9

How do you work this equation? x² + x - 30 = 0

Mathematics
2 answers:
Mariana [72]2 years ago
6 0

Answer:

x = 5 ,  x = - 6

Step-by-step explanation:

First we factor using factorisation method :

We need 2 numbers that multiply to give +1 and add to give -30 :

To find these numbers we write out all the factors of 30 :

1, 30

2 , 15

3 , 10

5 , 6    ----> These must be the numbers as -5+6 = 1

Now we split +x into -5x and +6x :

x² -5x + 6x -30 = 0

Factor the first 2 terms together and the last two terms :

x(x-5) + 6(x-5) = 0

Keep 1 bracket and terms outside the brackets collect them into one:

(x-5)(x+6) = 0

We know that 1 of these brackets must be equal to zero as anything multiplied by zero = 0

Either x - 5 =0      OR x + 6 = 0

So x = 5                x = - 6

These are our final answers

<em>Hope this helped and have a good day </em>

Tanzania [10]2 years ago
6 0

Answer:

(x-5) (x+6)

x=5

X=-6

Step-by-step explanation:

x²+x-30=0

factorizing

x²-5x+6x-30=0

x(x-5)+6(x-5) =0

(x-5)(x+6)=0

<u>now solve individually</u>

x-5=0

send 5 to the other side

x=5

x+6=0

send 6 to the other side

x=-6

hope you understand the procedure

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Use inverse operations and properties of equality to isolate the variable m+31=307
otez555 [7]

ANSWER

m = 276

EXPLANATION

The given equation is

m + 31 = 307

We add the additive inverse of 31 which is -31 to both sides of the equation to get,

m + 31   +  - 31= 307 +  - 31

Simplify;

m +0= 307 - 31

m = 276

6 0
3 years ago
-4x+3x=2 how do I solve for x?​
Snezhnost [94]

Answer: Combine like terms!

Step-by-step explanation:

-4x + 3x = 2

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-1x/-1 = 2/-1

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3 years ago
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Rudiy27

Perimeter is adding all 4 sides together.

To find the length and width divide total perimeter by 2:

21 / 2 = 10.5

We now know the length of 1 side and the width of 1 side need to equal 10.5.

Since the original piece was a square we also know the width needs to equal 1/2 of the length.


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Answer:

The values is  

Step-by-step explanation:

From the question we are told that

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The standardized score for a binding site position of 2.03 microns is mathematically represented as

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Angelina_Jolie [31]

Answer:

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Step-by-step explanation:


6 0
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