Answer:
83
Step-by-step explanation:
the angle with 126 is supplementary and all the angles of the triangle are supplementary
180-126 = 54
54 + 43 = 97
180 - 97 = 83
<span>x^3 - 4x^2 - 7x + 10 = 0</span>
The simplest for this answer is 27.66666666..... or 83/3. Hope it help!
