Answer:
Let's solve your equation step-by-step.
2a^3+4a2^2−5=a+3
4a4+2a3−5=a+3
Step 1: Subtract a+3 from both sides.
4a4+2a3−5−(a+3)=a+3−(a+3)
4a4+2a3−a−8=0
Step 2: Use quartic formula.
a=−1.28709,1.120554
a=−1.28709,1.12055
