yaitinyai_Igualdades+notables+1

math

(3-x)^2=3^2-x^2+2\cdot3\cdotx=9-x^2+6x\\

(5+x)^2=5^2+x^2+2\cdot5\cdotx=25+x^2+10x\\

(x-3)^2=x^2-3^2+2\cdot3\cdotx=x^2-9+6x\\

(6x+2)^2=6^2x^2+2+2\cdot6x\cdot2=36x^2+4+24x\\

(7x-1)^2=7^2-1+2\cdot7x=49x^2-1+14x\\

math