Question

Expand : ( 2x-5y ) ²​

Answer 1

Answer:

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Step-by-step explanation:

expanding a polynomial (2x-5y)2 = (2x-5y)(2x-5y)

= 2x*2x +2x*(-5y) +(-5y)*2x + (-5y)*(-5y)

= 4x2 -10xy - 10xy + 25y2

= 4x2 - 20xy + 25y2

Answer 2

Answer:

expand (2x-5y)squared

(2x-5y)2

=>

let (a-b)2 = a2 -2ab +b2

(2x-5y)2 = (2x)2 -2(2x)(5y) +(5y)2

=4x2 -20xy+25y2

Step-by-step explanation:

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