Question

Factorize 2xsquare + 13x+ 21

Answer 1

hope it will help you

Answer 2

Hey



2x² + 13x + 21



It is quadratic equation , and on putting the value of x , this equation must become 0

So ,


=> 2x² + 6x + 7x + 21 = 0


=> 2x ( x + 3 ) + 7 ( x + 3 ) = 0


=> ( x + 3 ) ( 2x + 7 ) = 0


Here , the concept used is that when we will multiply two numbers and the result will be 0 , then one of them must be 0 .


When ,

x + 3 = 0


=> x = ( - 3 )


and when ,


2x + 7 = 0


=> 2x = ( -7 )


=> x = ( -7 ) / 2