6. Given the remainder, determine the value of m for each of the following operations. a) P(x) = (x+mx-7)+(x-1); remainder = 5 b) P(x) = (x3+mx + 6x-3)+(x+3); remainder = -21 == c) P(x)=(x+- 3x3 + x + mx+5)+ (2x-1); remainder =47 16