1.

A⁸+3a⁴+4 solve by factorisation

Answer»

LET a^4=t

t^2+3t+4=0

X=(-b+-√b^2-4ac)/2a

x=(-3+-√9-8)/2

x=(-3+1)/2=(-1) or x=(-3-1)/2=(-2)


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