Question

1.If f: R-->R is defined by f(-x)=x^2+1, then f (x²-1) is
a) x^4 +1
b) x^4- x^2 + 2
c)x^4+ - 2x^2 + 2
d) x^4 + x^2 - 2​

Answer 1

Answer:

. If a and b are the zeroes of quadratic polynomial x² + 5x+7, then what is the value of a+b+ab