Question

Dau inima daca rezolvati ex 14, 15

Answer 1

Răspuns:

Explicație pas cu pas:

4) a) x³-2x²+x = x(x²-2x+1) = x(x-1)²

b) 9x³+6x²+x = x(9x²+6x+1) = x(3x+1)²

c) 5x²+20x+20 = 5(x²+4x+4) = 5(x+2)²

d) 2x²y-12xy+18y = 2y(x²-6x+9) = 2y(x-3)²

e) 4x³y+8x²y²+4xy³ = 4xy(x²+2xy+y²) = 4xy(x+y)²

5) a) 5x²-5 = 5(x²-1) = 5(x-1)(x+1)

b) x⁴-x² = x²(x²-1) = x²(x-1)(x+1)

c) 2x³-8x = 2x(x²-4) = 2x(x-2)(x+2)

d) 3x⁵-3x = 3x(x⁴-1) = 3x(x²-1)(x²+1)

e) 2x³y - 8xy³ = 2xy(x²-4y²) = 2xy(x-2y)(x+2y)

f) 12x³-27xy² = 3x(4x²-9y²) = 3x(2x-3y)(2x+3y)

Answer 2

Ai răspuns atașat pe foaie.