-8b^2+c+bc-2b^2-6bc+3c+5bc

Question

-8b^2+c+bc-2b^2-6bc+3c+5bc

Answer 1

-10в^2+4с^2=-2(5в^2+2с^2) /:(-2) =5в^2+2с^2

Answer 2

-8b^2+c+bc-2b^2-6bc+3c+5bc=4*(c-17b^2)