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Factorize (2x + 3 )( 3 - r ) - (2x - 5 )( 3 - r ) por favor(a( a + b ) - b ( a + b )?

Factorize (2x + 3 )( 3 - r ) - (2x - 5 )( 3 - r ) por favor (a( a + b ) - b ( a + b ).

En resumen

(2x + 3)(3 - r) - (2x - 5)(3 - r) Factorizando (3 - r) = (3 - r){(2x + 3) - (2x - 5)} = (3 - r){2x + 3 - 2x + 5} = (3 - r)(8) Factorizando (a + b) a(a + b) - b(a + b) = (a + b)(a - b).

Mejor respuesta

Helena232323
5

(2x + 3)(3 - r) - (2x - 5)(3 - r)

Factorizando (3 - r) = (3 - r){(2x + 3) - (2x - 5)} = (3 - r){2x + 3 - 2x + 5} = (3 - r)(8)

Factorizando (a + b)

a(a + b) - b(a + b) = (a + b)(a - b).