Question

1.)8c^2–21c–9
2.) 3m^2+5mn-2n^2

Answer 1

Answer:

(8c+3)(c−3)      

Answer:

(3m−n)(m+2n)

Step-by-step explanation:

Factor 3m2+5mn−2n2

3m2+5mn−2n2

=(3m−n)(m+2n)

Factor 8c2−21c−9

8c2−21c−9

=(8c+3)(c−3)