Odpowiedź :
a) 9 -a = 9 -10 = -1 c) 3(a-b) = 3[4 -(-2)] = 18
b) x+2y = 2 + 2*5 = 12 d) (x+1 (x+1) = (3+1) (3-1) = 8
Odpowiedź:
a) 9- a = 9-10= -1
b) x-2y = 2 - 2× 5 = 2- 10= -8
c) 3(a+b) = 3× 4+ (-2) = 12+ (-2) = 10
d) ( x- 1) (x-1) = (3-1)(3-1) = 2×2=4