WARRENCANVOT2005
Answered

SVP aidez moi
Développer et réduire :
c) -8 (2t -6) + 5 (9t +7)
a) 5 (2t -8) +4 b) -7 (6x -8) + 7​

Sagot :

SARAHCTN07

Explications étape par étape:

c) = (-8) × 2t + (-8) × (-6) + 5 × 9t + 5 × 7

= (-16t) + 48 + 45t + 35

= 29t + 83

a) = 5 × 2t + 5 × (-8) + 4

= 10t - 40 + 4

= 10t - 36

b) = (-7) × 6x + (-7) × (-8) + 7

= (-42x) + 56 + 7

= (-42x) + 63