AzayliaD342156 AzayliaD342156
  • 03-11-2022
  • Mathematics
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Question 12Which equation contains a perfect square trinomial?O x2 - 6x + 72 = 0O x2 + 2x - 4 = 0O2? + 14x + 49 = 0O x2 – 5x + 64 = 0

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ColetteB49643 ColetteB49643
  • 03-11-2022

A perfect square trinomial has a general structure which is

[tex]a^2\pm2ab+b^2[/tex]

The one that meets this structure is

[tex]x^2+14x+49[/tex]

We know it because it can be re written as

[tex]x^2+2\cdot7\cdot x+7^2[/tex]

Which shows in a more explicit way the estructure of a perfect square trinomial. The right answer is c

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