Question

Help me I need help on factor completely

Answer 1

As in:
Factoring by grouping, Using the Simple/Hard Diamond method, etc?

Answer 2

well

Answer 3

trinomial right..

Answer 4

=a^2-10a+3a-30
=a(a-10)+3(a-10)
=(a-10)(a+3)

Answer 5

I didn't want to know the answer but an explanation ...

Answer 6

into solving these type of question

Answer 7

ok,look for 2 numbers whose product is -30 and whose sum is -7,which are -10 and +3;
now expand the middle term using these 2 numbers,then factor by grouping