Factorise $2x^{2} + 7x + 3$.

Factorise $2x^{2} + 7x + 3$.
  1. $(2x + 1)(x + 3)$
  2. $(2x + 3)(x + 1)$
  3. $(2x - 1)(x - 3)$
  4. $(2x + 1)(x - 3)$

Solution

Split $7x$ as $6x + x$: $(2x+1)(x+3)$. Verify: $2x^{2} + 6x + x + 3$.

Asked in: MH-SSC-9

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