bonjour pouvez vous m’aider je n’y arrive pas

Réponse:

1) x^2-3x+1

a. 9^2-3(9)+1

= 81-27+1

= 55

b. 0-3(0)+1

= 1

c. - 4^2-3(-4)+1

= 16+12+1

= 29

d. (2/3)^2-3(2/3)+1

= 4/9-2+1

= - 5/9

2) 2x^2-6x+1

e. (2(7))^2-6(7)+1

= 196-42+1

= 155

f. 0-6(0)+1

= 1

g. (2(-5))^2-6(-5)+1

= - 100+30+1

= 131

h. (2(4/3))^2-6(4/3)+1

= (8/3)^2-8+1

= 64/9-7

= 1/9