Ontario 10 Academic (MPM2D)
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Difference of two squares

Interactive practice questions

Answer the following.

a

Expand $\left(x+5\right)\left(x-5\right)$(x+5)(x5).

b

Hence factor $x^2-25$x225.

Easy
Approx a minute
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Which positive integer must go in the spaces to make the statement true?

What expression must go in the space to make the statement true?

One linear factor of $x^2-49$x249 is $x+7$x+7. What is the other factor?

Outcomes

10D.QR3.02

Factor polynomial expressions involving common factors, trinomials, and differences of squares, using a variety of tools and strategies

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