qutkaVerlampic qutkaVerlampic

26-11-2016
Mathematics

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Factor completely: 10ax + 5bx - 8ay - 4by

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JcAlmighty JcAlmighty

28-11-2016

The answer is (5x - 4y)(2a + b)

10ax + 5bx - 8ay - 4by = 10ax + 5bx - (8ay + 4by) =
= 5x * 2a + 5x * b - (2a * 4y + b * 4y) =
= 5x(2a + b) - 4y(2a + b) =
= (5x - 4y)(2a + b)

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