Question

what is the quadratic formula for 4x^2-32x+15=0.

Answer 1

Given 4x^2-32x+15 = 0

Compare it to quadratic equation ax^2+bx+c = 0

a = 4, b = -32 , c = 15

Roots are x = [-b±√(b^2-4ac)]/2a

x = [32±√(1024-240)]/8

x = [32±√784]/8

x = [32±28]/8

x = [32+28]/8 and x = [32-28]/8

x = 60/8 and x = 4/8

x = 7.5 and x = 0.5