Difference of two squares

Maths

Quadratic expressions (9.9)

Which expression is equivalent to a² - b² ?

Match the expression equivalent to (x+4)(x-4).

Match the expression equivalent to (x+9)(x-3).

Which calculation would work out 64² - 4² ?

Match the expression equivalent to (x+25)-(x-25).

Match the expression equivalent to (73+x)(73-x).

Choose the word which best fills the gap: When we ________ double brackets every term in the first bracket must be multiplied by every term in the second bracket.

A rectangle has side lengths (x+4) and (x-3). Match the expression that would represent it's area.

Yasmin expanded (a + x + 3)(x + 2). Below are her workings out. Which expression matches the area of the rectangle she has created?

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Difference of two squares

Lesson outcome