SOLUTION: how do i get the answer to 1)X 2power - 2x - 13 =0 2) 4x 2power - 4x + 3 =0 3) x 2power + 12x - 64 = 0 4) 2x 2power - 3x

SOLUTION: how do i get the answer to 1)X 2power - 2x - 13 =0 2) 4x 2power - 4x + 3 =0 3) x 2power + 12x - 64 = 0 4) 2x 2power - 3x - 5 = 0 please help me out

Question 330251: how do i get the answer to
1)X 2power - 2x - 13 =0
2) 4x 2power - 4x + 3 =0
3) x 2power + 12x - 64 = 0
4) 2x 2power - 3x - 5 = 0
please help me out

Found 2 solutions by solver91311, Fombitz:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

Use the quadratic formula for all 4 of these.

For a quadratic equation in standard form: the two roots are given by:

.

For your first one:

, , and

So:

Just do the arithmetic and simplify. Do the other three exactly the same way. Remember, if the discriminant, that is the part of the formula that is under the radical, is negative, then you have a conjugate pair of complex roots of the form where is the imaginary number defined by . Hint: This is the situation in the 2nd of your problems.

John

My calculator said it, I believe it, that settles it

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Use the quadratic formula, I'll show you with 1 and you do the rest.

.
.

.
.

RELATED QUESTIONS
3-[4+3(2-5)2power]2power+3(4-1) (answered by rfer)
Multiply: (5t 2power + 1)(2t 2power +... (answered by JBarnum)
if f(x) = 5x to the 2power-3x+1,find... (answered by babynarah2007)
I need to see if I got this answer correct. -3xtothe 1/4power (y1/2power) (-2x1/2power... (answered by Earlsdon)
Use synthetic division to divide x 3power + 4x 2power + 14x -8 /... (answered by stanbon)
2power of x + 8(2power of... (answered by Fombitz)
4(-2)2power+8(-2)+3(-2)+6 (answered by jerryguo41)
I am not sure how to write this problem; I need help with the steps to figure the... (answered by checkley71)
Is this the right way do do the problem: 16-3(8-3)^2/5 (answered by praseenakos@yahoo.com)