👤

Sagot :

Réponse:

K = 5x

L= 4-30x

M=-11x³-15x²

N=-25x³+5x²-5x

Explications étape par étape:

K= 5x+ ( -2x+3)

K=5x ×(-2x) + 5x × 3

K= -10x + 15x

K= 5x

L= 4+6x+ (2x-7)

L= 4+ 6x × 2x + 6x × (-7)

L= 4+ 12x -42x

L= 4 -30x

M= 3x² +(-4x²+x-5)

M= -12x³ +x³ -15x²

M= -11x³-15x²

N=-5x + (5x²-x+1)

N=-25x³+5x²-5x

© 2024 IDNLearn. All rights reserved.