3 years ago

Factorise y^2 - 16 (y squared)

Mathematics

2 answers:

cricket20 [7]3 years ago

8 0

$y^2-16=y^2-4^2=(y-4)(y+4)\\\\\text{used}\ a^2-b^2=(a-b)(a+b)$

Mila [183]3 years ago

3 0

Sqrt(y^2) = y
sqrt(16) = 4
-4y + 4y = 0
The answer is
(y-4)(y+4)

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