x3 + x2 - 3x - 3 x(x2 + x - 3) - 3
(x2 + 3x + 5)(x2 - 3x + 4)
x2 + 3x - 18 = (x + 6)(x - 3)
x^2 + 7x -18 = (x - 2)(x + 9)
x2 + 48x + 320
i got 42 divided 7x
Separate and simplify the common terms. 5x^2 - X^2 = 4x^2 -7x - 2x = -9x Now put these terms back together 4x^2 - 9x Or if simplified further, you get: x(4x-9)
(3x - 5x) + (x2 - 6x2) = -2x -5x2 = -x(2 + 5x)
5
=3x * * * * * The correct answer is: x2 + 7x + 12 = (x + 3)(x + 4).
(3x + 5)(x2 - 2)
for x = -2: x2 = 4, -5x2 = -20; 3x = -6 giving -20 - (-6) = - 20 + 6 = -14.
If you mean: f(x) = x4 - 3x3 + 5x2 / x2 then: f(x) = x4 - 3x3 + 5 ∴ f'(x) = 4x3 - 9x2 If you mean: f(x) = (x4 - 3x3 + 5x2) / x2 then: f(x) = x2 - 3x + 5 ∴ f'(x) = 2x - 3
Y = 5x2 + 7x - 3use the pq-formula: x2 + px + qp = 7q = -3x = -p/2 +- sqrt( (p/2)2 - q)x = -7/2 +- sqrt ( (7/2)2 -(-3))x = -3,5 +- sqrt ((49/4) + 3)x = -3,5 +- sqrt (12,25 + 3)x1 = -3,5 + sqrt(15,25)x2 = -3,5 - sqrt (15,25)
x2+7x=-2x2+6 3x2+7x-6=0 (3x-2)(x+3)=0 3x-2=0 or x+3=0 x=2/3 or x=-3
Assuming simplify = factor...x3 - 3x + 2 = (x-1)(x2+x-2)
x2 + 3x + 28 can not be factored. If on the other hand you meant to type: x2 + 3x - 28 That can indeed be factored: = x2 + 7x - 4x - 28 = x(x + 7) - 4(x + 7) = (x - 4)(x + 7)