Question

solve for x. 4x(x-5)-5x(x-4)=-1

Answer 1

First distribute.
Then combine like terms.
Then solve the quadratic.

Answer 2

ok, 4x-20-5x+20= -1?

Answer 3

Nope.

\[4x(x-5) - 5x(x-4) = -1\]\[4x(x) - 4x(5) - 5x(x) -5x(-4) = -1\]

Answer 4

and continue from there. You have to distribute the 4x to each term.

Answer 5

unless you mean for the x to be multiplication symbol and not a variable.

Answer 6

no the x is not multiplication symbol.... ok im going to try it, ty for the advice i really appreciate it.

Answer 7

Just remember how to distribute:
\[a(b+c) = a(b) + a(c)\]
That's all I did above, just with different values.

Answer 8

ok :)

Answer 9

ok, x = [20 + -√400-4x25)]/2 ????

Answer 10

x =[20 + -√300)] /2

Answer 11

im trying to work it, ill get it im sure.

Answer 12

Not quite right. What did you get for the quadratic after you combined like terms??

Answer 13

x^2+20x - 25 = 0

Answer 14

thanks for the help. ill continue to work at it. it has been over 25 yrs since schooling.