Posted by Nini on .
Factor by Grouping.Thanks Bob. PLEASE SHOW ME THE STEPS!
just to make it clear,the 2 infront of -21
is actualli an Exponent 2.
Gr. 10 math again! -
Online, x^2 = x squared.
6x^2 - 21xy + 8xz - 28xz = 6x^2 - 21xy - 20xz =
x(6x - 21y - 20z)
x^2 + 5x + 7x +35 = x^2 + 12x + 35
What two numbers would give a product of 35 and add to 12? That should help you factor.
I hope this helps. Thanks for asking.