1.

Factorise 2xSquare + 2x -15Give It FastClass 9 Answer​

Answer»

ANSWER:

(x+3)(2x−7)

Step-by-step explanation:

The given EXPRESSION 2x

2

−x−21 can be factorised as follows:

2x

2

−x−21=2x

2

−7x+6x−21=x(2x−7)+3(2x−7)=(x+3)(2x−7)

HENCE, 2x

2

−x−21=(x+3)(2x−7)



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