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1.Find all real solutions. Be sure to check for extraneous solutions

/in /by

1.Find all real solutions. Be sure to check for extraneous solutions.x/5x+4=3
2.Use the appropriate change of base formula to approximate the logarithm

log3(12)

3.Use the sum and difference identities to find the exact value. You may have need of the Quotient, Reciprocal or Even/Odd identities as well

cos(75degrees)

4.Use the Law of cosines to find the remaining side(s) and angle(s) if possible

a=1, b=2, c=5

 
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