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Rewrite x2 + 5x + 6 as x2 + rx + sx + 6 and then factorize it.

Mathematics

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Answer

x2+2x+3x+6x^2 + 2x + 3x + 6

(x + 2)(x + 3)

Step-by-step solution

3 steps

here are the solutions to Activity 3:

3.1.3 Rewrite x2+5x+6x^2 + 5x + 6 as an equivalent expression in the form x2+rx+sx+6x^2 + rx + sx + 6.
Using r=2r=2 and s=3s=3 (from the previous steps):

x2+2x+3x+6x^2 + 2x + 3x + 6

The equivalent expression is x2+2x+3x+6\boxed{x^2 + 2x + 3x + 6}.

3.1.4 Use the knowledge obtained from activity 2 on grouping and the distributive property to factorize the expression.

  1. Group the terms of the rewritten expression.

    (x2+2x)+(3x+6)(x^2 + 2x) + (3x + 6)
  2. Factor out the common factor from each group.

    x(x+2)+3(x+2)x(x + 2) + 3(x + 2)
  3. Factor out the common binomial factor (x+2)(x + 2).

    (x+2)(x+3)(x + 2)(x + 3)

    The factored expression is (x+2)(x+3)\boxed{(x + 2)(x + 3)}.

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