How do you factor #49x^2-16#?

Answer 1

Eva Abramson

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

# 49x^2 - 16 = (7x)^2 - (4)^2#

#(7x)^2 - (4)^2 = color(red)((7x-4)(7x+4)#

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Answer 2

Jameson Allen

To factor (49x^2 - 16), you can use the difference of squares formula, which factors into ((7x - 4)(7x + 4)).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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