Biggest mistake when Multiplying Binomials

#shorts

A common mistake that is made when multiplying binomials.

[turbogaming]

Well you can find using options as well. If you multiply and divide a term with 2 the eqn becomes ((2a+b)/2)². Since denominator is 4 and option b is incorrect it can only be option d

[gamerfluxxPLUS]

Yes, agree this is the biggest mistake
(a+b)² = a² + 2ab + b²
Then (a + b/2)² = a² + 2(a)(b/2) + (b/2)²
Which is option D. a² + ab + b²/4

[chessandmathguy]

The first part of the video makes it sound like squaring each term in the parenthesis is wrong, but you DO square each term. There's just more to it, that's all.

[herbcruz]

Or, as a shortcut, we can remember the formula below: (x±y)^2=x^2±2xy+y^2

In this case, we have (a+(b/2))^2.

Directly applying the formula above, we get the following:



a^2+ab+((b^2)/4)

Same result as before, but we get to the answer a lot quicker.

GG.

[kennethbigboi]

Half of ab which is ab/2 add another half of ab is one ab which quickly led me to d without any extra steps

[turbogaming]

One of the biggest mistake people do...?
I wanna meet those people