3 years ago

(x + 3)^2 - 4x^2 Factorise using the difference of two squares

Mathematics

1 answer:

AlladinOne [14]3 years ago

8 0

Answer:

3(x + 1)(3 - x).

Step-by-step explanation:

(x + 3)^2 - 4x^2

Using the identity a^2 - b^2 = (a - b)(a + b), we have

(x + 3 - 2x)(x + 3 + 2x)

= (-x + 3)(3x + 3)

= 3(x + 1)(3 - x)

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