jvargas0207
13.12.2019 •
Mathematics
If f(x)=x^2-15 and f(a)=49, what is the value of a? explain.
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Ответ:
a=8, -8
Step-by-step explanation:
a^2-15=49
a^2=49+15
a^2=64
a=sqrt(64)
a=8, -8
Ответ: