Michele8874
Michele8874
14-02-2017
Mathematics
contestada
(2a+b)^2 how do you do this
Respuesta :
lukyo
lukyo
15-02-2017
• Expand (2a + b)²:
(2a + b)²
= (2a + b) · (2a + b)
Multiply out the brackets by applying the distributive property of multiplication:
= (2a + b) · 2a + (2a + b) · b
= 2a · 2a + b · 2a + 2a · b + b · b
= 2²a² + 2ab + 2ab + b²
Now, group like terms together, and you get
= 2²a² + 4ab + b²
=
4a² + 4ab + b²
<——— expanded form (this is the answer).
I hope this helps. =)
Tags:
special product square of a sum algebra
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