Question

5ac²/a²-4c²*a-2c/ac при a= -5,2 c= -2,4

Answer 1

$frac{5ac^{2} }{ a^{2}-4c^{2} }* frac{a-2c}{ac}= frac{5ac^{2}*(a-2c) }{(a-2c)(a+2c)*ac}= frac{5c}{a+2c}= frac{5*(-2,4)}{-5,2+2*(-2,4)}= frac{12}{10}=1,2$