1.

Factorise : 5 + 7x - 6x2

Answer»

5 + 7x - 6x2 = 5 + 10x - 3x(1 + 2x)

= 5(1 + 2x) -3x(1 + 2x)

= (1 + 2x) (5 - 3x)



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