- Find the polynomial that represents the perimeter of a triangle whose sides are 3x+7, 4x-9 and 5x+6?

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Solve over the set of complex numbers:
(a) z^3 = i
(b) z^5 = −i
(c) z^2 = √(3) + i
(d) z^3 − 9 = 0
(e) z^6 − 7iz^3 + 8 = 0? How can we say that 1/4 wavelength dipole has impedance of 36.5, without knowing the size or material of the antenna, i can't understand? Let f be the function given by f(x)=2cosx+1. What is the approximation for f(1.5) using the line tangent to the graph of f at x=π/2? My body retains electricity from work. Perhaps radiation. What type of medical test picks up on radiation present not organ function.? If I wanted to trace electrical movement in my body, what type of Nuclear Medicine or MRI test would be best?