qui peux m aider à factoriser les expressions suivantes 6x+18 9x+6 42-14x 54-18a 49+21x 36z-63 5b+25 3x²+x 8t²+2t x+4x² 3y²+9y merci

6x+18
= 6(x+3)

9x+6
= 3(3x+2)

42-14x
= 14(3-x)

54-18a
= 18(3-a)
49+21x
= 7(7+3x)

36z-63
= 9(4z-7)

5b+25
= 5(b+5)

3x²+x
= x(3x+1)

8t²+2t
= 2t(4t+1)

x+4x²
= x(1+4x)

3y²+9y
= 3y(y+3)

6x+18=6(x+3)

9x+6=3(3x+2)

42-14x=14(3-x)

54-18a=9(6-2a)

49+21x=7(7+3x)

36z-63=9(4x-7)

5b+25=5(b+5)

3x²+x=x(3x+1)

8t²+2t=2t(4t+1)

x+4x²=x(1+4x)

3y²+9y=3y(y+3)