Question

Factorise: 1. x+7- 2x2​

Answer 1

Answer:

plus into minus is equal to plus

so minus 28

Answer 2

answer:

x+7-2×2

=x+7-4

=divert the parts like -3+7=positive 7

=x-3+4-4

x(1-3x)+1(4-4)

there are three factorise (1-3x) , (4-4) , (x+1)