Question

solve x^2-4x=5

Answer 1

this can be solved by factoring

rewrite the equation by subtracting 5 from each side of the equation.

so you have

\[x^2 -4x -5 = 0\]

now you can factor the quadratic

Answer 2

I don't know how to factor

Answer 3

use the quadratic formula then

Answer 4

and learn how to factor

Answer 5

a quadratic equation has the form:
ax^2 + bx + c

to solve for x, make the equation equal 0
ax^2 + bx + c = 0

then use the quadratic formula to find the answer (see attached image for quadratic formula)

in this case your equation is:
x^2 −4x −5 =0
ax^2 + bx + c = 0

which means that for this equation:
a = 1
b = -4
c = -5

so sub ur values for a b and c into the quadratic formula, and is should give you 2 values which satisfy when x=0