12emmavenner 12emmavenner

25-04-2016
Mathematics

contestada

Factorise
5x(squared) + 17x -12
3x(squared) + 10x +7

Respuesta :

Panoyin Panoyin

02-05-2016

5x² + 17x - 12
5x² - 20x + 3x - 12
5x(x) - 5x(4) + 3(x) - 3(4)
5x(x - 4) + 3(x - 4)
(5x + 3)(x - 4)

3x² + 10x + 7
3x² + 3x + 7x + 7
3x(x) + 3x(1) + 7(x) + 7(1)
3x(x + 1) + 7(x + 1)
(3x + 7)(x + 1)

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