Question

factor of a polynomial 21ab-14ax+15by-10xy

Answer 1

Any ideas?

Answer 2

Welcome to Open Study :-)

Answer 3

@kateryna Are you still there?

Answer 4

I think the answer is 7a-5y

Answer 5

yes ,I 'm here

Answer 6

how did you get that answer?

Answer 7

21ab-14ax+15by-10xy
7a(3b-2x)+5y(3b-2x)

Answer 8

please ,check my answer

Answer 9

You are correct so far. Now use the distributive property:
$$\Huge ba+ca=(b+c)a$$ to factor
$$\Huge 7a(3b-2x)+5y(3b-2x) =?$$ it completely...