1a)(a+7)=a²+14a+49 b)(1,2+b)²=1,44+2,4b+b² c)(c+1 2/3)²=c²+3 1/3c+2 7/9 d)(√5-d)²=5-2√5d+d² e)(3k+ 2/5)²=9k²+1 1/5+4/25 f)(5m+6n)²=25m²+60mn+36n² 2a)(z-9)²=z²-18z+81 b)(0,7-w)²=0,49-1,4w+w² c)(u-2 1/3)²=u²-4 2/3u+ 5 4/9 d)(√3-v)²=3-v√3+v² e)(3y-3/4)²=9y²-4,5y+9/16 f)(1,1-0,3x)²=1,21-0,66x+0,09x²
1a)(a+7)=a²+14a+49 b)(1,2+b)²=1,44+2,4b+b² c)(c+1 2/3)²=c²+3 1/3c+2 7/9 d)(√5-d)²=5-2√5d+d² e)(3k+ 2/5)²=9k²+1 1/5+4/25 f)(5m+6n)²=25m²+60mn+36n² 2a)(z-9)²=z²-18z+81 b)(0,7-w)²=0,49-1,4w+w² c)(u-2 1/3)²=u²-4 2/3u+ 5 4/9 d)(√3-v)²=3-v√3+v² e)(3y-3/4)²=9y²-4,5y+9/16 f)(1,1-0,3x)²=1,21-0,66x+0,09x²
(a+7)*=a*+14a+7* (1,2+b)*=1,2*+2,4b+b* (1c+1 2/3)*=c*+10/3c+25/9 (^5-d)*=5-10d+d* (3k+2/5)*=9k+12/5k+4/25 (5m+6n)*=25m+60mn+36n* (z-9)*=z*-18z+18 (0,7-w)*=0,49-1,4w+w* (u-2 1/3)*=u*-14/3u+49/9 (^3-v)*=3-6v+v* (3y-3/4)*=9y-18/4y+9/16 (1,1-0,3x)*=1,11-0,66x+,0,09x*
