Question

simplify ( 64/125 )-2/3 +( 256/625) -1/4*(3/​

Answer 1

1)x+a=0

x=-a

x³+ax²-2x+a+4=0

(-a)³+a(a)²-2(a)+a+4=0

-a³+a³-2a+a+4=0

-a+4=0

a=4

that is answer of the first question