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Ajutor, dau coroana !!! Supunctele a si b .

Ajutor Dau Coroana Supunctele A Si B class=

Răspuns :

Iakabcristina2
a)(5x+6)/(x-2)(x+2) - (x+3)/(x-2) • (x-2)/(x+2)(x+3)
= (5x+6)/(x-2)(x+2) - 1/(x+2)
= (5x+6-x+2)/(x-2)(x+2)
= (4x+8)/(x-2)(x+2)
= 4(x+2)/(x-2)(x+2)
= 4/(x-2)

b)[2(3x+1)-3(3x-1)+5]/(3x-1)(3x+1) • (3x-1)^2/5x
= (6x+2-9x+3+5)/(3x+1) • (3x-1)/5x
= (-3x+10)(3x-1)/5x(3x+1)