Answer:
8x^2-1
Step-by-step explanation:
8x^2-x+4+x-5=8x^2-x+x+4-5=8x^2+4-5=8x^2-1
The boundary line should be solid because it have a 'great/less than or equal to' sign
Answer:
434 miles
Step-by-step explanation:
1hr = 62 miles
7hr = 434 miles
62 times 7 = 434
The standard form of the polynomial is expressed as 
<h3 /><h3>The standard form of a polynomial</h3>
The standard form of a polynomial is degree 3 is expressed as:
Given the expression 5x-4-3x²+2x², we are to write it in standard form. The standard form is expressed as shown:
Collect the like terms;


Group the terms:

Hence the standard form of the polynomial is expressed as 
Learn more on polynomial here: brainly.com/question/4142886