Friday 10 April 2015

ALGEBRA 4




Multiply 2x - 5y by -2a

solution

= -2a(2x - 5y)

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

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

= -4ax +10ay     [since -2a x -5y = +10ay ]

TRY THIS...................

Multiply 8p - 3q by  -4a

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