a)
T(x) = (2x+5)² + 2x + 5
= (2x+5) (2x+5) + 1 (2x+5)
b) on factorise par (2x+5)
T(x) = (2x+5) (2x+5+1)
T(x) = (2x+5) (2x+6)
T(x) = 2 (2x+5) (x+3)
Bonjour,
T(x)= (2x+5)(2x+5)+2x+5
T(x)= 4x²+10x+10x+25+2x+5
T(x)= 4x²+22x+30
T(x)= 2(2x+5)(x+3)
T(x)= 2(2x²+5x+6x+15)
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a)
T(x) = (2x+5)² + 2x + 5
= (2x+5) (2x+5) + 1 (2x+5)
b) on factorise par (2x+5)
T(x) = (2x+5) (2x+5+1)
T(x) = (2x+5) (2x+6)
T(x) = 2 (2x+5) (x+3)
Bonjour,
T(x)= (2x+5)(2x+5)+2x+5
T(x)= 4x²+10x+10x+25+2x+5
T(x)= 4x²+22x+30
T(x)= 2(2x+5)(x+3)
T(x)= 2(2x²+5x+6x+15)
T(x)= 4x²+22x+30