Question

因式分解3个填空题a^2-10a+( )=( )^2( )+2ay+1=( )^21/4-( )+r^2s^2=( )^

Answer 1

a^2-10a+(25)=(a-5)^2

(a²y²)+2ay+1=(ay+1)^2

1/4-(rs)+r^2s^2=(1/2-rs)^2