Question

Descompunerea in factori:
3x la a zecea + 9x la a 8 =
xla a doua - 5x =
x(x+1)-x-1=
xla a doua (x+1)+(x+1)la a doua =
VA ROG RASPUNDETI RAPID

Answer 1

3x^10 + 9x^8 = 3x^8 (x^2 + 3)

x^2 - 5x = x (x - 5)

x (x + 1) - x - 1 = x^2 + x - x - 1 = x^2 - 1 = (x + 1) (x - 1)

x^2 (x + 1) + (x + 1)^2 = (x + 1) (x^2 + x + 1)

Answer 2

Răspuns:

Explicație pas cu pas:

3 x¹⁰ + 9 x⁸ = 3 x⁸· ( x² + 3 )

x² - 5 x = x · (x - 5)

x( x + 1 ) - x - 1 = x ( x + 1 ) - ( x + 1 ) = ( x + 1) ( x - 1 )

x² ( x + 1 ) + ( x + 1 )² = ( x + 1) ( x² + x + 1)