6x^2+13x+12 Plz help me

Mathematics

2 answers:

Elodia [21]3 years ago

5 0

49x + 12
i have to type 20 words to submit anyways i’m pretty sure thats the answer

rodikova [14]3 years ago

4 0

Answer:

x=- $\frac{13-i\sqrt{119} }{12}$ , - $\frac{13-i\sqrt{119} }{12}$

Step-by-step explanation:

You might be interested in

For each expression, select all equivalent expressions from the list.

sdas [7]

6x and 6(8y-3) have a good day!

4 0

3 years ago

For what value is x+4/5x-9 undefined?

pochemuha

Hello from MrBillDoesMath!

Answer: x = 9/5

Discussion :

The quotient is undefined when the denominator = 0. i.e. 5x - 9 = 0

5x - 9 = 0

5x = 9 (add 9 to both sides)

x = 9/5 (divide both sides by 5)

Regards, MrB

5 0

3 years ago

Differentiate 1/√x^2-1

xz_007 [3.2K]

The function is $f(x)= \frac{1}{ \sqrt{ x^{2} -1}}$

write f again as $f(x)= (x^{2} -1)^{- \frac{1}{2} }$

(the power -1 takes the expression to the denominator, and the power 1/2 is square root)

writing rational expressions as power expressions, generally makes differentiation more practical.

In $f(x)= (x^{2} -1)^{- \frac{1}{2} }$ we notice 2 functions:

the outer function $u^{ -\frac{1}{2} }$ , where $u=x^{2} -1$ , and the inner, u itself , which is a function of x.

So we differentiate by using the chain rule:

$f'(x)= -\frac{1}{2}u^{- \frac{1}{2}-1 }*u'= -\frac{1}{2}u^{- \frac{3}{2} }*(2x)=- \frac{x}{ \sqrt{ u^{3} } } =- \frac{x}{ \sqrt{ (x^{2} -1)^{3} } }$

Answer: $- \frac{x}{ \sqrt{ (x^{2} -1)^{3} } }$