Question

what are some polynomial identities?

Answer 1

(a+b)^ 2 = a ^2 + 2ab + b^ 2

(a+b)(c+d) = ac + ad + bc + bd

a^ 2 - b^ 2 = (a+b)(a-b) (Difference of squares)

a ^3 (+-) b ^3 = (a (+-) b)(a^ 2(-+) ab + b ^2) (Sum and Difference of Cubes)

x^ 2 + (a+b)x + AB = (x + a)(x + b)

if ax^ 2 + bx + c = 0 then x = ( -b (+-)sqrt(b^ 2 - 4ac) ) / 2a (Quadratic Formula)

Answer 2

are those the only ones or is there more?

Answer 3

(a+b) 2 = a 2 + 2ab + b 2

(a+b)(c+d) = ac + ad + bc + bd

a 2 - b 2 = (a+b)(a-b) (Difference of squares)

a 3 (+-) b 3 = (a (+-) b)(a 2(-+) ab + b 2) (Sum and Difference of Cubes)

x 2 + (a+b)x + AB = (x + a)(x + b)

if ax 2 + bx + c = 0 then x = ( -b (+-)sqrt(b 2 - 4ac) ) / 2a (Quadratic Formula)

Answer 4

nope thats all

Answer 5

Oh ok thank you