Question

log(x^2 -21)=2 find x​

Answer 1

Answer:

Step-by-step explanation:

x^2-21=2

x^2=21+2

x^2=23

x=+or-square root of 23

Answer 2

Step-by-step explanation:

log(x^2-21)=2

then,x²-21=100

x²=100+21

x²=121

x=√121

x=+or-11

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