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secondary 2 | Maths
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Shams
Shams

secondary 2 chevron_right Maths chevron_right Singapore

Pls help me with this question. The question is to factorise the equation.
Pls reply asap . Thanks

Date Posted: 5 years ago
Views: 192
J
J
5 years ago
18x² - 2y²

Take out the common factor 2.
→ 2(9x² - y²)

Then, recall (a + b)(a - b) = a² - b²

Notice that 9x² = 3x × 3x = (3x)²

So it becomes 2(3x + y)(3x - y)
Shams
Shams
5 years ago
Thx

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