Answered

5 On considère C = (2x + 1)² - 49.
a. Factorise C.
C = (2x + 1)2 - 49

Sagot :

(2x+1-7)(2x+1+7)=(2x-6)(2x+8)=4(x-3)(x+4)
CHRISSINGOYIJR

(2x+1)²-7²

(2×-1+7)(2x-1-7)

(2x+6)(2x-8)

4(x+3)(x-4)