We can use completing the square or cross-method to factorise a quadratic expression.
Can x ² + x + 1 be factorised using any of the methods?
Why / why not?
Wednesday, February 6, 2008
Sunday, February 3, 2008
I'm NOT square!
Is (a + b) ² = a ² + b ² ??
Explain that (a + b) ² = a ² + 2ab + b ² with the help of the diagram below:
Explain that (a + b) ² = a ² + 2ab + b ² with the help of the diagram below:
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