Question

find the roots of 2x^2+11x-21=0
by factorisation method
with explation​

Answer 1

Answer:

Hh Hh I want to be a good bbgf

Answer 2

2x^2+11x-21=0

2x^2+(14-3)x-21=0

2x^2+14x-3x-21=0

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

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

x+7=0

x= -7

2x-3=0

2x=3

x=3/2