dohien714 dohien714
  • 20-08-2021
  • Mathematics
contestada

bài 5: rút gọn
(x +1)^2 – (2x + 1)^2

Respuesta :

Witcher3
Witcher3 Witcher3
  • 20-08-2021

[tex](x+1)^2-(2x+1)^2=\\\\=(x^2+2\cdot x\cdot1+1^2)-((2x)^2+2\cdot2x\cdot1+1^2)=\\\\=(x^2+2x+1)-(4x^2+4x+1)=\\\\=x^2+2x+1-4x^2-4x-1=\\\\=x^2-4x^2+2x-4x+1-1=\boxed{-3x^2-2x}[/tex]

Answer Link

Otras preguntas

Type the missing number in the sequence 1, , 4, 8, 16
Mike had avoided cleaning his room for the third week in a row. His parents were growing tired of his tendency to be ________. Which word best completes the sen
When paying off debts, you should _____.
What does the text say that the primary advantage of the North over the South was?
What is the opportunity cost of an investment? a. the combined values of the other opportunities available b. the value of the next most valuable opportunity c.
What is the effect of oxymoron “civil disobedience”?
How does the book " Sounder " represent Christianity?
write y=x^2+24x+124 in vertex form. step by step
Identify the function that best models the given data
Potassium carbonate (K2CO3) has one potassium atom bonded to carbon, and that carbon is also bonded to three oxygens. Their electronegativities are shown in the