Question

Factor by grouping (sometimes called the ac-method).3x²+x-10First, choose a form with appropriate signs.Then, fill in the blanks with numbers to be used for grouping.Finally, show the factorization.Form:Х?23x+x ++ 0x--1023x+X1023xx ++ 0x102X03xX10Factorization:0

Answer 1

Given the expression:

3x² + x - 10

We can rewrite it as:

3x² + 6x - 5x - 10

Which can be factoriced as:

3x(x + 2) - 5(x + 2) =

(x + 2)(3x - 5)