Question

помогите решить,пожалуйста!
(х-8)²-(64-6в)=

(х-9)²-(81+2а)=

Answer 1

${(x - 8)}^{2} - (64 - 6b) = {x}^{2} - 16x + 64 - 64 + 6b = {x}^{2} - 16x + 6b$
${(x - 9)}^{2} - (81 + 2a) = {x}^{2} - 18x + 81 - 81- 2a = {x}^{2} - 18x - 2a$