Zapisz trojmian w postaci kwadratu sumy i oblicz jego wartosc
a.
4m^2+12m+9,gdy m=-3
4m^2+12m+9=(2m+3)^2=(2*(-3)+3)^2=(-3)^2=9
b.
25a2+20a+4,gdy a=2
25a^2+20a+4=(5a+2)^2=(5*2+2)^2=144
c.
16+48x+36x2,gdy x=-2
16+48x+36x^2=(4+6x)^2=(4+6*(-2))^2=(4-12)^2=(-8)^2=64
d.
9+60b+100b2,gdy b=1
9+60b+100b^2=(3+10b)^2=(3+10*1)^2=13^3=169