I would double check if I were you! Hope this helps!
The answer is D. The polynomial is irreducible because 12 can’t be squared.
The general form of a quadratic equation is that which is expressed in a form,
ax² + bx + c = 0
To write the equation in its general form, eliminate the decimal by multiplying the equation by 10. It now becomes,
3x² + 50x - 70 = 0
The value of b is therefore 50 and the answer is the second choice.
The answer would be b) the 2 represents the two width pairs