I need help answering these problems. If anyone can help me it would be greatly appreciated! Thank you!
Solve the Equation
A.plus or minus 3i and plus or minus square root of 3
B. 3, square root of 3
C. plus or minus 3, plus or minus i square root of 3
d.plus or minus 3
2.If f(x)+2x^2+x and g(x)+2x-l, what is [f o g](x)?