Question

已知a,b满足根号2a+b+根号1-a分之|2a^2-8|=0,求三次根号3a-2b^3+11的值

Answer 1

2a+b=0

1-a>0

2a²-8=0

∴a=-2

b=4

∴3a-2b^3+11

=-6-128+11

=-123

∴三次根号3a-2b^3+11=3次根号下(-123)