a) w(x)=x⁴-1=(x²-1)(x²+1)
b) w(x)=x⁴-16=(x²-4)(x²+4)
c) w(x)=x⁴-4=(x²-2)(x²+2)
d) w(x)=81x⁴-1=(9x²-1)(9x²+1)
e) w(x)=36x⁴-16=(6x²-4)(6x²+4)
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a) w(x)=x⁴-1=(x²-1)(x²+1)
b) w(x)=x⁴-16=(x²-4)(x²+4)
c) w(x)=x⁴-4=(x²-2)(x²+2)
d) w(x)=81x⁴-1=(9x²-1)(9x²+1)
e) w(x)=36x⁴-16=(6x²-4)(6x²+4)