Pre-calc quick question..find all the real numbers that satisfy the given equation..?

L

LimaLimon91

New member
2.) For each example, find all real numbers that satisfy the given equation.

a) x^4-9x^2=-20

(non-calculator)

b) e^2x=5e^x+3

(calculator)


I just don't understand this concept, someone please help to guide me through it. thanks
 
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