Solve open parentheses square root of 7 close parentheses to the 6 x power = 49x−6.

x = negative 21 over 2
x = −6
x = negative 6 over 5
x = −12

Option D is correct.

x = -12

Step-by-step explanation:

Solve:  

We can write 49 as:

using exponent rules:

Apply this rules on the given equation:

Simplify:

On comparing both sides we get;

Subtract 2x from both sides we get;

x = -12

Therefore, the value of x is -12

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

is there any photos or whatever?