Question

СРОЧНО ПОЖАЛУЙСТА !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

1) $\frac{4c-3d}{cd}-\frac{c-3d}{cd}=\frac{4c-3d-c+3d}{cd}=\frac{3c}{cd}=\frac{3}{d}$

2) $\frac{6x}{x^{2}-16}+\frac{24}{x^{2}-16}=\frac{6x+24}{(x-4)(x+4)}=\frac{6(x+4)}{(x-4)(x+4)}=\frac{6}{(x-4)}$

3) $\frac{m^{2}+10m}{9-m^{2}}-\frac{4m-9}{9-m^{2}}=\frac{m^{2}+10m-4m+9}{9-m^{2}}=\frac{m^{2}+6m+9}{9-m^{2}}=\frac{(3+m)^{2}}{(3-m)(3+m)}=\frac{(3+m)}{(3-m)}$

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