Math, asked by borabharat, 11 months ago

square of 3 x minus 4 Y​

Answers

Answered by amee5454
13

(3x - 4y ) ^ 2

= (3x)^2 + (-4y)^2 + 2*3x*4y

=9(X)^2 + 16(y)^2 + 24xy.

therefore the answer = 9x^2+16y^2+24xy..

hope helps uhhhh

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amee5454: mark mee
Answered by gourig2007
7

See required product=(3x-4y)2

So identity used is (a-b)2 =a2+2(a)(b)+b2

(3x-4y)2=(3x)2+2(3x)(4y)+(4y)2

= (9x)2+2(12xy)+(16y)2

=(9x)2+24xy+(16y)2

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