y = 2x2 - 3x - 20
∴ y = 2x2 - 8x + 5x - 20
∴ y = 2x(x - 4) + 5(x - 4)
∴ y = (2x + 5)(x - 4)
The x intercepts occur when y = 0, which happens when either of the two factors on the left side of the equation equal zero. This means that they are at the points (-5/2, 0) and (4, 0).
Chat with our AI personalities
They are at: x = -2.5 and x = 4
2x2 -3x - 4 = 0 use the qudratic equation and your answers are 1.137458609 and -2.637458609
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
the system of equations 3x-6y=20 and 2x-4y =3 is?Well its inconsistent.
12xy