Question 64790
1) factor by grouping  2ab^2-8b^2+a-4
{{{(2ab^2-8b^2)+(a-4)}}}
{{{2b(a-4)+1(a-4)}}}
{{{highlight((2b+1)(a-4))}}}
:
2) Factor the trinomial   k^2-11k+30
(k___)(k____)
Fill the _____ with two numbers that multiply to give you +30, but add to give you -11.
-6*-5=+30
-6+(-5)=-11
{{{highlight((k-6)(k-5))}}}
Happy Calculating!!!