Answer:
<em>x⁴-3x³+x²-4</em>
Step-by-step explanation:
<em>I know cuz i worked it out, and it's really hard to explain, so just trust me.</em>
<C = 133 degrees
<B = 90 - 43
<B = 47
<C = 180 - 47
-7x - 3y -5
brain
1/2 plus 1/3 is 5/6.
You have to find the common denominator