Question

6. Descompune în factori:
a) 3x⁵-5x³;
b) 2y⁶+18y;
c) 4a⁸-3a⁵;
d) x³-2x²-3x;
e)5y⁴+3y²-y;
f) 4a³+3a⁴-7a⁷;
g) x⁴-2x³-x²;
h) 7t⁵-5t⁷. îmi trebuie URGENT DAU COARANA doar la F,G,H.❤❤​

Answer 1

Răspuns:

Explicație pas cu pas:

a) 3x⁵-5x³ = x³·(3x²-5)

b) 2y⁶+18y = 2y·(y⁴+9)

c) 4a⁸-3a⁵ = a⁵·(4a³-3)

d) x³-2x²-3x = x·(x²-2x-3) = x·(x²-3x+x-3) =

=x·[x·(x-3)+(x-3)] = x·(x-3)(x+1)

e)5y⁴+3y²-y = y·(5y³+3y-1)

f) 4a³+3a⁴-7a⁷ = a³·(4+3a-7a⁴)

g) x⁴-2x³-x² = x²·(x²-2x-1)

h) 7t⁵-5t⁷ = t⁵·(7-5t²)