The highest common factor of the two terms is 3, so that goes outside the bracket as 3(____). To get 3x^2, you multiply 3 by x^2, which is your first term in the bracket, and to get -21, you multiply 3 by -7, so your final answer is 3(x^2 - 7). I hope this helps!
Line 3
since he added which is against the order of opreation rule he was supposed to multiply first then add
again what he was supposed to do is
Line 2:21+5+6(2)
Line 3:21+5+12
Answer:
C it does make sense and looks like right answer
<u>Answer:</u>
The equation using a fractional exponent
is 
<u>Solution:</u>
Given, term is cube root of x square
In numerical terms cube root of x square can be written as ⇒ cube root of ![x^{2} \rightarrow \sqrt[3]{x^{2}}](https://tex.z-dn.net/?f=x%5E%7B2%7D%20%5Crightarrow%20%5Csqrt%5B3%5D%7Bx%5E%7B2%7D%7D)
We have to write the expression for above given term in the form of fractional exponent of x.
In
, cube root is written in fractional form

Now, powers are multiplied


Finally x is in power of a fraction, so we got the required answer