Attached the solution and work.
Answer:

Step-by-step explanation:
1) In this question we've been given "a", the leading coefficient. and two roots:

2) There's a theorem, called the Irrational Theorem Root that states:
If one root is in this form
then its conjugate
. is also a root of this polynomial.
Therefore

3) So, applying this Theorem we can rewrite the equation, by factoring. Remembering that x is the root. Since the question wants it in this expanded form then:

0.00869565217
There you go.
Answer:
:D
Step-by-step explanation:
it is 19 cm
Answer: it is in absolute value form, so when you take it out the signs would change to 7 + 42 = 49
Step-by-step explanation: