Question

Given that a=3, b=4 and c= -5 work out b(squared) - 2ac

Answer 1

Answer = 46

Substitute the known values of a, band c into the expression b^2 - 2ac.

a = 3, b = 4, c = -5

b^2 – 2ac

(4)^2 – 2(3)(-5)

16 – 6(-5)

16 – (-30)

16 + 30 = 46