Esercizio
$\frac{a}{a^2-3a-4}+\frac{5-a}{a^2+2a+1}$
Soluzione passo-passo
Impara online a risolvere i problemi di passo dopo passo. Simplify a/(a^2-3a+-4)+(5-a)/(a^2+2a+1). Factor the trinomial a^2-3a-4 finding two numbers that multiply to form -4 and added form -3. Rewrite the polynomial as the product of two binomials consisting of the sum of the variable and the found values. The trinomial a^2+2a+1 is a perfect square trinomial, because it's discriminant is equal to zero. Using the perfect square trinomial formula.
Simplify a/(a^2-3a+-4)+(5-a)/(a^2+2a+1)
Risposta finale al problema
$\frac{10a-20}{\left(a+1\right)^{2}\left(a-4\right)}$