Math, asked by vanshbansal1104, 1 year ago


( {2x + 5y})^{3}  -  {(2x - 5y)}^{3}

Answers

Answered by Pat111
0
hope u get Ur point.....
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Pat111: hi..ans is here
Answered by nilesh102
0

hi mate,

(2x-5y)³-(2x+5y)³

a³-b³ = (a-b)(a²+b²+ab)

=> (2x-5y-2x-5y)[{2x-5y}²+{2x+5y}²+(2x-5y)(2x+5y)]

=> -10y(4x²+25y²-20xy+ 4x²+25y²+20xy+4x²-25y²)

(a+b)(a-b) = a²-b²

= -10y(12x²+25y²)

i hope it helps you.

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