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ax^2 + bx + c utk x = 1
= a(1)^2 + b(1) + c
= a + b + c
b.
ax^3 + bx + c utk x = -1
= a(-1)^3 + b(-1) + c
= -a - b + c
semoga membantu
b) a.-1³+b.-1+c=-a³+(-b)+c
=-a³-b+c