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erica [24]
4 years ago
15

Factorise y^2 - 169?????????????

Mathematics
2 answers:
Thepotemich [5.8K]4 years ago
4 0
Step 1. Rewrite it in the form: a^{2} - b^{2}, where a = y and b = 13

y^{2} - 13^{2}

Step 2. <span>Use </span><span>Difference of Squares: </span>a^{2} - b^{2} =(a+b)(a-b)

(y+13)(y-13)

Done!
Nat2105 [25]4 years ago
3 0
= <span>y^2 - 169
= (y)^2 - (13)^2
= (y + 2)(y - 2)</span>
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