Решите уравнения 2(2x+3) = 8(1-x)-5 (x-2) 2x(7-30x)+15x(4x+2)=40(x-5)

Question

Алгебра: Решите уравнения 2(2x+3) = 8(1-x)-5 (x-2) 2x(7-30x)+15x(4x+2)=40(x-5)

menyaylo56 · Accepted Answer

А) p(c – d) + c – d = p(c – d) + (c – d) = (p+1)( c – d);
б) a(p – q) + q – p = a(p – q) –( p– q) = (a-1)(p – q) ;
в) bx – a + ax – b = b(x – 1)+а(х-1) = (b + а)(x – 1);
г) cx – y + x – cy = (x-y)(c+1);
д) x3 + x2 + x + 1 = (x+1)(x²+1) ;
е) c5 – c3 – c2 + 1 = (c³-1)(c²-1);
ж) m4 + 2m3 – m – 2 = (m³-1)(m+2) ;
з) n6 – 3n4 – 2n2 + 6 = (n^4 -2)(n²-3) ;
и) c2 – cd – 8c + 8d = (c-8)(c-d) ;
к) 13x – xy + 13y – x2 = (y+x)(13-x) ;
л) mn – mk + xk – xn = (m-x)(n-k) ;
м) z2 + 6z – az – 6a = (6-z)(z-a) ;
н) 3n – nk + 3k – k2 = (3-k)(n+k);
о) ck – cd – c2 + dc = с( к-c).

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