Question

Use the quadratic formula to solve the equation.
–4x2 – 3x + 2 = 0

Answer 1

4x2 – 3x + 2 = 0
or 4x2 + 3x - 2 = 0 (multiplying - on both sides)
or 16x2 +12x -8 = 0 (multiplying 4 on both sides)
or (4x)2 +2*4x*3/2+(3/2)2-(3/2)2-8=0



or (4x+3/2)2=(3/2)2+8=9/4+8=41/4
or 4x+3=sqrt(41/4)=(sqrt41)/2
or 4x=-3+(sqrt41)/2
or x=-3/4+(sqrt41)/8
ans

Answer 2

\[x =\frac{ -b \pm \sqrt{b^2 - 4ac} }{ 2a } \]

Answer 3

here a=-4 , b = -3 and c = 2
you will get two values of x that will be the required solution.

Answer 4

okay, thanks a bunch!