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How do you write #y= -7x^2+14# in factored form?

Answer 1

Eli Assouline

#y=-7(x+sqrt2)(x-sqrt2)#

First, you can factor out -7. #y=-7x^2+14# #y=-7(x^2-2)#

You will notice that #(x^2-2)# is a special product (difference of two squares). #y=-7(x^2-2)# #y=-7(x+sqrt2)(x-sqrt2)#

After that, you won't be able to factor it any further. :)

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Answer 2

Julia Adams

To write ( y = -7x^2 + 14 ) in factored form, you can factor out the greatest common factor, which is 7. This yields: ( y = 7(-x^2 + 2) ).

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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.