Question

please solve it algebric expression​

Answer 1

Answer:

open the brackets and solve:

• 8x + x + 8 y - y
• = 9x + 7 y
• like this only 2 problem is there

Answer 2

$1) \: \: ( x + 8y)(8x - y) \\ \\ = x(8x - y) + 8y(8x - y) \\ \\ = 8 {x}^{2} - xy + 8xy - 8 {y}^{2} \\ \\ = 8 {x}^{2} + 7xy - 8 {y}^{2}$

$2) \: ( {a}^{2} + b) \: (a + {b}^{2} ) \\ \\ = {a}^{2} (a + {b}^{2} ) + b(a + {b}^{2} ) \\ \\ = {a}^{3} + {a}^{2} {b}^{2} + ab + {b}^{3}$