Question

4(4x-10y) (6x+8y) - 12(4x-10y) (2x-2y)​

Answer 1

$Given \: 4(4x-10y) (6x+8y) - 12(4x-10y) (2x-2y)$

$= 4(4x-10y)[(6x+8y) - 3(2x-2y)]$

$= 4[ 2(2x- 5y)[\cancel {6x} +8y- \cancel {6x} +6y]$

$= 8(2x-5y)\times 14y$

$= 112(2x-5y)y$

Therefore.,

$\red{4(4x-10y) (6x+8y) - 12(4x-10y) (2x-2y)}$

$\green{ = 112(2x-5y)y }$

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