Question

factories 4a2-16 by using formula
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Answer 1

Answer:

4a^2-(9b^2+16c^2-24bc)\. Now, using the formula a^2+b^2-2ab=(a-b)^2. 4a^2-(3b-4c)^2. Write in perfect squares form.

Answer 2

Answer:

(2a + 4) (2a - 4)

Step-by-step explanation:

$4a^{2}$ - 16

= $(2a)^{2}$ - $4^{2}$

= (2a + 4) (2a - 4)