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rodikova [14]
2 years ago
12

When a number x is added to it's square, the total is 12. find two possible values of x​

Mathematics
1 answer:
Fudgin [204]2 years ago
3 0

Answer:

<h2><u><em>x=3 or x=−4</em></u></h2>

Step-by-step explanation:

when a number x is added to it's square, the total is 12. find two possible values of x

x+x^2=12

x^2+x=12

x^2+x−12=12−12

x^2+x−12=0

(x−3)(x+4)=0

x−3=0 or x+4=0

x=3 or x=−4

x=3 or x=−4

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4 0
3 years ago
X + y = -15, what is the answer?
kvv77 [185]

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Step-by-step explanation:

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kirill [66]
<h2>Answer:</h2>

x = 1

y = 1

<h3>Step-by-step explanation:</h3>

y=-3x+4\\ y=x

Substitute into one of the equations

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Rearrange variables to the left sider of the equation

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Combine like terms

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Divide both sides of the equation by the coefficient of variable

x=\frac{-4}{-4}

Determine the sign for multiplication or division

x=\frac{4}{4}

Cross out the common factor

x=1

Substitute into one of the equations

y=1

The solution of the system is

\left \{ {{x=1} \atop {y=1}} \right.

<em>I hope this helps you</em>

<em>:)</em>

8 0
2 years ago
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