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By factorizing algebraic expression bc + bd + yc + yd, answer will be

  • A.(b - y)(c + d)
  • B.(2b + 3y)(4c + 2d)
  • C.(b + y)(c + d)
  • D.(8b + 4y)(2c + 3d)

Answer: C

Group in pairs and factor each.

\[ bc + bd + yc + yd = b(c + d) + y(c + d) \]

\[ = (b + y)(c + d) \]

Both signs are positive throughout, so the answer carries no minus.

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