personfromyourscreen
personfromyourscreen personfromyourscreen
  • 04-03-2019
  • Mathematics
contestada

Which algebraic expression is equivalent to the expression below?

[2x+1-(4x+6)]^2

A. 4x2 + 20x + 25
B. 36x2 - 60x + 25
C. 36x2 + 84x + 49
D. 4x2 - 28x + 49

Respuesta :

ckayep0cx2v
ckayep0cx2v ckayep0cx2v
  • 04-03-2019

Answer:

A. 4x²+20x+25

Step-by-step explanation:

Because of PEMDAS, you calculate the value inside of the parenthesis first, so you expand [2x+1-(4x+6)]:

2x+1-4x-6 = -2x-5.

Then apply the exponent:

(-2x-5)² = (-2x-5)(-2x-5) = 4x²+10x+10x+25 = 4x²+20x+25

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clarisa20 clarisa20
  • 04-03-2019
4x2+20x+25 is the A
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