Question

O valor numérico de P+Q, para a=3 e x=2.

Answer 1

$P+Q=2 x^{2} +3 x^{2} + a^{2} + 3a^{2} -2ax +3ax \\ ~~~~~~~~~=5 x^{2} +4a^{2} +ax \\ ~~~~~~~~~=5. 2^{2} +4.3 ^{2}+3.2 \\ ~~~~~~~~~=5.4+4.9+6 \\~~~~~~~~~=20+36+6 \\ \\ ~~~~~~~~~~~\larged\boxed {P+Q=62} \\ \\ \\ \\ .$