Question

VA ROG FRUMOS SA ÎMI DESCOMPUNETI SI MIE ​

Answer 1

Raspuns:

Explicație pas cu pas:

v=radical

(2x-3)(x-5)-3(x-5)^2=(x-5)(2x-3-3x+15)=(x-5)(-x+12)

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(x-y)(2x-y+z)+(y-z)(y-y+z)=(x-y)(2x-y+z-x+y-z)=(x-y)(2x+z-x-z)=(x-y)z=x(x-y)

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(3a+b)(a-b)+(b-a)(a+b)=(a-b)(3a-a)=(a-b)2a=2a(a-b)

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(av2-bv3)(2a+1)+(av2-bv3)(a+2)=(v2a-v3b)(3a+3)=(v2a-v3b)3(a+1)=3(v2a-v3b)(a+1)