exam Maths Puzzle Numerical Ability

THE FUNCTION f DESCRIBED BY f(c)=9/5c+32 GIVES THE FAHRENHEIT TEMPERATURE CORRESPONDING TO THE CELSIUS TEMPERATURE c. FIND THE FAHRENHEIT TEMPERATURE EQUIVALENT TO -10C.

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I hope the way this is typed out makes sense. Any help would be greatly appreciated.

(x-1)/(x^2+ 1) ∙ (x^(4 )- 1)/((x-1)�) ∙ (x^2- 1)/(x^4- 2x^2+ 1)

I came up w Here is my proof question I am having trouble solving.

Given: measure of angle ACE = 58 degrees
AE is perpendicular bisector of BC
BF is bisector of angle ABG