The number 4 is being decreased by a number. Decreased means that something is being subtracted. Since you do not know the number, the number will be x.
Trevor isn't correct because -2i must also be a root
<em><u>Solution:</u></em>
For the polynomial with roots -7, 2i and 7 their roots can be,
1. ) Real roots
2.) Imaginary roots
The real roots are: -7 and +7
The imaginary root given is: 2i
The imaginary roots come from the square root. So they will be in form of
Therefore,
For f(x) with roots -7 and +7 and we have,
Fundamental Theorem of Algebra states that a polynomial will have exactly as many roots as its degree (the degree is the highest exponent of the polynomial).
So for f(x) with 4 roots, degree of f(x) is 4
So option B is correct. Trevor is not correct because –2i must also be a root.
Sale price = overall price for something EX: Shoes: $75.24 Tax (florida) 7% 7 turns to .07 .07 * 75.24 = 5.2668 round to nearest tenth 5.30 add this amount to total amount 75.24 + 5.30 = 80.54 And der u go