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Sagot :
Answer:
1. [tex]\frac{135}{360}[/tex]xπx[tex]11^{2}[/tex]=142.5cm
2a. [tex]x^{2}[/tex] +2x= x(x+2)
2b. [tex]2x^{2}[/tex]-6x= 2x(x-3)
2c. 15x-10[tex]x^{3}[/tex]= 5x(3x-2[tex]x^{2}[/tex])
2d. 9[tex]x^{2}[/tex]+3[tex]x^{3}[/tex]= 3[tex]x^{2}[/tex](3+x)
3a. (x+8) (x+2)
3b. (X+4) (x+3)
3c. (x+12) (x+1)
4a. 4522.145
4b. 278.15
5a. 14.3
5b. 43.19
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