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Which will result in a difference of squares?

Question

June 17, 2021

Which will result in a difference of squares?

A. (–7x + 4)(–7x + 4)

B. (–7x + 4)(4 – 7x)

C. (–7x + 4)(–7x – 4)

D. (–7x + 4)(7x – 4)

No items found.

Answer

Neat W.

99%

A difference in squares is given by (a^2-b^2), every problem that can be factored as the equation is a difference of squares problem, so one need to find which numbers squares, (a-b)(a+b) or (a+b)(a-b) thus the equation C,

=(-7x+4)(-7x-4)

49x^2+28X-28x-16

=49x^2-16

=(7x-4)(7x+4)

Thus, the problem has taken the factored out square shown.

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Jacky M.

99%

Answer

(–7x + 4) (–7x – 4)

49x2 + 28x - 28x – 16

49x2-16

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