2x2 - 5x = 3
∴ 2x2 - 5x - 3 = 0
∴ 2x2 + x - 6x - 3 = 0
∴ x(2x + 1) - 3(2x + 1) = 0
∴ (x - 3)(2x + 1) = 0
∴ x ∈ {-0.5, 3 }
Chat with our AI personalities
2x squared - 5x - 3 = (2x +1)(x -3)
2x squared minus 5x minus 3 factored is (2x+1)(x-3).
6x2 + 5x - 6 is factored out to (2x + 3)(3x - 2).
2x2 + 5x + 3 Notice the first term, which can be rewritten as 2x times x. With this in mind, you can write the equation as...(2x + a)(x + b)...where -a and -b are the answers.You know that a times b is equal to 3.With a little trial and error, you will find:2x2 + 5x + 3 = (2x + 3)(x + 1)
(5x-10)(x+3)