Answer:
Its A
Step-by-step explanation:
I took the quiz.
F(x) = x^4 + 81x^2
f(x) = x^2*x^2 + x^2*81
f(x) = x^2*(x^2 + 81) ... see note 1
f(x) = x^2*(x + 9i)(x - 9i) ... see note 2
note 1: if you haven't learned about complex or imaginary numbers yet, then you would stop at the line with "note 1" on it
note 2: you would stop here if you have learned about complex or imaginary numbers and you want to factor over the complex numbers. I used the rule that
a^2 + b^2 = (a+bi)*(a-bi)
Every triangle on the inside is 180 degrees no matter how you contort the triangle.
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Answer:
b+6
Step-by-step explanation:
3b-2b+6=(3-2)b+6=b+6
Answer: The value of x in a triangle is 120°
Step-by-step explanation:
