Answer:

Step-by-step explanation:
The 3 roots are given out of which 2 are real and 1 is imaginary. For a polynomial of least degree having real coefficients, it must have a complex conjugate root as the 4th root. Therefore, based on 4 roots, the least degree of polynomial will be 4. Finding the polynomial having leading coefficient=1 and solving it based on multiplication of 2 quadratic polynomials, we get:

Step-by-step explanation:
I hope you understand it
B
explanation: cuz i said so
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I THINK SSS, SAS AND ASA WOULD PROVE TRIANGLES ARE CONGRUENT.