Question

factorise the following
9x²-16​

Answer 1

Answer:

#color(blue)(a^2 - b^2 = (a+b)(a-b)#

#9x^2 - 16 = (3x)^2 - (4)^2#

# (3x)^2 - (4)^2 = color(red)((3x-4)(3x+4)#

Step-by-step explanation:

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Answer 2

Answer:

9x²-16

=> (3x)² - 4²

=> (3x + 4)(3x -4)

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