Ontario 10 Applied (MFM2P)
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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

10P.QR1.04

Factor the difference of squares of the form x^2 – a^2 (e.g., x^2 – 16)

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