(b) Solve the equation
(a) 13x + 2x^2 = 84
(b) x = -3 or x = 7
If 13 times a Number, x, is added to twice it's square, the results is 84 (a) obtain a quadratic equation in x.
2 answers
All it did was ask for the quadratic equation, which would be
2x^2 + 13x - 84 = 0
which does NOT have solutions of -3 and 7
(x - 4)(2x + 21) = 0
x = 4 or x = -21/2 , not the bot's answer
2x^2 + 13x - 84 = 0
which does NOT have solutions of -3 and 7
(x - 4)(2x + 21) = 0
x = 4 or x = -21/2 , not the bot's answer
1 answer