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3 years ago

If x/5 +6=-14,then x=

Mathematics

2 answers:

Alexandra [31]3 years ago

6 0

Answer:

-100

Step-by-step explanation:

$\frac{x}{5} + 6 = - 14$

Subtract 6 from both sides

$\frac{x}{5} = - 20$

Multiply both sides by 5

$x = - 100$

Otrada [13]3 years ago

3 0

Answer: x= -100

Step-by-step explanation:

X/5=-14-6

X/5=-20

X=-100

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3 years ago

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3 years ago

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vazorg [7]

If $x+a$ is a factor of the polynomial, it means that $-a$ is a root of the polynomial.

In fact, if a polynomial $p(x)$ has a root $x_0$ (i.e. $p(x_0)=0$ ), then the polynomial is divisible by $(x-x_0)$

In your case, you know that the polynomial is divisible by $(x+a)=(x-(-a))$ , so $-a$ is a solution.

Let's evaluate $p(-a)$ and set it to zero:

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And we're claiming that $-a=-2$ is a root of this polynomial:

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