(i) (7x + 3) (7x – 4) = 49 x2 – 7x - 12 explain this to me which formula is related to this?

Question

(i) (7x + 3) (7x – 4) = 49 x2 – 7x - 12 explain this to me which formula is related to this?​

Brielle · Answer

Answer:   (a+b) (c-d) = (axc+bxc)-(axd+bxd)

(i) (7x + 3) (7x – 4) = 49 x2 – 7x – 12explain this to mewhich formula is related to this?​