Question

find the value of x
[-7/5]¹¹+[-7/5]³=[-7/5]²x+2​

Answer 1

Answer:

${ (\frac{ - 7}{5} )}^{11} + { (\frac{ - 7}{5}) }^{3} = {( \frac{ - 7}{5}) }^{2x + 2} \\ { (\frac{ - 7}{5} )}^{11 + 3} = {( \frac{ - 7}{5}) }^{2x + 2} \\ { (\frac{ - 7}{5} )}^{14} = {( \frac{ - 7}{5}) }^{2x + 2} \\ 14 = 2x + 2 \\ 14 - 2 = 2x \\ 12 = 2x \\ \frac{12}{2} = x \\ \large{ \boxed{ \underline{ \underline{6}} = x}}$