Answer:
x = -1.5
Step-by-step explanation:
For this case, we must build a quotient that, when multiplied by the divisor, eliminates the terms of the dividend until it reaches the rest.
The attached figure shows the quotient given by:

Answer:
Quotient: 
See attached image
A = (350/13) and B = (400/-13)
<em><u>Polynomials in standard form:</u></em>

<em><u>Solution:</u></em>
Standard form of polynomials: terms are ordered from biggest exponent to lowest exponent
<em><u>Option A:</u></em>

The above is a polynomial
Where, largest exponent is arranged first
Therefore, it is standard form of polynomial
<em><u>Option B</u></em>

Here, exponents are from greatest to least
Therefore, it is standard form of polynomial
<em><u>Option C</u></em>

Here, "t" is a variable. The first term has largest degree
Therefore, it is standard form of polynomial