It is a quadratic equation and its solutions are: x = 4 or x = -9
Chat with our AI personalities
If the 64 has a minus sign, then the solution is x = +/-5 Simplifying gives 4x squared = 100 ie x squared = 25...
x sq equalls 36 and x equalls plus or minus 6
62 = 36
(x^2 - 4)(x^2 + 9) set to zero to see roots ( watch out for the surprise! )
9x2 + 27x - 36 = 9(x2 + 3x - 4) = 9(x + 4)(x - 1)