Question

( 4+у)^2. (Z+6)^2. (5+k)^2 (-a-x)^2. Решите пж

Answer 1

(4+у)²=4²+2·4у+у²=16+8у+у².
(z+6)²=z²+2z·6+6²=z²+12z+36.
(5+k)²=5²+2·5k+k²=25+10k+k².
(-a-x)²=(-a)²+2ax+x²=a²+2ax+x².