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Let

g(x)=x4+5x3−7x2−29x+30

Show that g(1)=0 and g(−3)=0.

Hence, solve the equation

g(x)=0

Because 2 is a factor of 24 and 3 is a factor of 24, we know that 2×3=6 is a factor of 24.

Can you apply the same idea to this problem?