expand (3x+4y)^2 just need to make sure :D
Answers
Answered by
59
by the formula : (a+b)² = a²+b² +2ab
we, here have, 3x as a and 4y as b, on expansion, it's :
9x² + 16y² + 24xy
we, here have, 3x as a and 4y as b, on expansion, it's :
9x² + 16y² + 24xy
ultramc42:
Hey thanks but shouldn’t it be 25xy?
nope, 2*(4*3)xy that is 24xy
by the formula
oh I see thanks a lot
Anytime bruh :)
:D
Answered by
39
(3x+4y)^2 = (3x+4y) (3x+4y)
Using the first identity
(a+b)^2 = a^2 + 2ab + b^2
(3x)^2 + 2×3x×4y + (4y)^2
9x^2 + 24xy + 16y^2
Sorry,
I don't understand what is D.
This is the solution of your question. I hope that it will help you.
Using the first identity
(a+b)^2 = a^2 + 2ab + b^2
(3x)^2 + 2×3x×4y + (4y)^2
9x^2 + 24xy + 16y^2
Sorry,
I don't understand what is D.
This is the solution of your question. I hope that it will help you.
oh don’t worry about :D its just a smile emote :D if you look at it sideways
thanks tho
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