Question

Factorise the following question x^2-2x-15

Answer 1

ur answer is x²-2x=-15

then x²-x=-15/2=7.5

then x=7.5is the answer plzz mark it brillent plzz plzz

Answer 2

Factorising of : x² - 2x - 15

x² - 2x - 15

= x² - ( 5 - 3 )x - 15. [ • 15 = 5 × 3 ]

= x² - 5x + 3x - 15

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

= ( x - 5 ) ( x + 3 ). [ • Required Answer ]

[ • By using middle term method ]