Question

X=3+√5 value of (2x3-9x2-10x+13)

Answer 1

Step-by-step explanation:

putting value of x=2(3+√5)^3-9(3+√5)^2-10(3+√5)+13=2×(27+5√5)-9(9+5)-30-10√5+13. 54+10√5-81-45-30-10√5+13. =-89